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</div> </a> <button aria-controls="toc-History-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle History subsection</span> </button> <ul id="toc-History-sublist" class="vector-toc-list"> <li id="toc-The_term_"aromatic"" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#The_term_"aromatic""> <div class="vector-toc-text"> <span class="vector-toc-numb">2.1</span> <span>The term "aromatic"</span> </div> </a> <ul id="toc-The_term_"aromatic"-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-The_structure_of_the_benzene_ring" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#The_structure_of_the_benzene_ring"> <div class="vector-toc-text"> <span class="vector-toc-numb">2.2</span> <span>The structure of the benzene ring</span> </div> </a> <ul id="toc-The_structure_of_the_benzene_ring-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-Characteristics_of_aromatic_(aryl)_compounds" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Characteristics_of_aromatic_(aryl)_compounds"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>Characteristics of aromatic (aryl) compounds</span> </div> </a> <ul id="toc-Characteristics_of_aromatic_(aryl)_compounds-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Importance_of_aromatic_compounds" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Importance_of_aromatic_compounds"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Importance of aromatic compounds</span> </div> </a> <ul id="toc-Importance_of_aromatic_compounds-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Types_of_aromatic_compounds" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Types_of_aromatic_compounds"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Types of aromatic compounds</span> </div> </a> <button aria-controls="toc-Types_of_aromatic_compounds-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> <span class="vector-icon mw-ui-icon-wikimedia-expand"></span> <span>Toggle Types of aromatic compounds subsection</span> </button> <ul id="toc-Types_of_aromatic_compounds-sublist" class="vector-toc-list"> <li id="toc-Neutral_homocyclics" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Neutral_homocyclics"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.1</span> <span>Neutral homocyclics</span> </div> </a> <ul id="toc-Neutral_homocyclics-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Heterocyclics" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Heterocyclics"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.2</span> <span>Heterocyclics</span> </div> </a> <ul id="toc-Heterocyclics-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Polycyclics" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Polycyclics"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.3</span> <span>Polycyclics</span> </div> </a> <ul id="toc-Polycyclics-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Substituted_aromatics" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Substituted_aromatics"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.4</span> <span>Substituted aromatics</span> </div> </a> <ul id="toc-Substituted_aromatics-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Atypical_aromatic_compounds" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Atypical_aromatic_compounds"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.5</span> <span>Atypical aromatic compounds</span> </div> </a> <ul id="toc-Atypical_aromatic_compounds-sublist" class="vector-toc-list"> <li id="toc-Y-aromaticity" class="vector-toc-list-item vector-toc-level-3"> <a class="vector-toc-link" href="#Y-aromaticity"> <div class="vector-toc-text"> <span class="vector-toc-numb">5.5.1</span> <span>Y-aromaticity</span> </div> </a> <ul id="toc-Y-aromaticity-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> </ul> </li> <li id="toc-See_also" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#See_also"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>See also</span> </div> </a> <ul id="toc-See_also-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-References" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#References"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>References</span> </div> </a> <ul id="toc-References-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Contents" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Toggle the table of contents" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Toggle the table of contents</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Aromaticity</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Go to an article in another language. Available in 42 languages" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-42" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">42 languages</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-af mw-list-item"><a href="https://af.wikipedia.org/wiki/Aromatisiteit_(chemie)" title="Aromatisiteit (chemie) – Afrikaans" lang="af" hreflang="af" data-title="Aromatisiteit (chemie)" data-language-autonym="Afrikaans" data-language-local-name="Afrikaans" class="interlanguage-link-target"><span>Afrikaans</span></a></li><li class="interlanguage-link interwiki-ar mw-list-item"><a href="https://ar.wikipedia.org/wiki/%D8%B9%D8%B7%D8%B1%D9%8A%D8%A9" title="عطرية – Arabic" lang="ar" hreflang="ar" data-title="عطرية" data-language-autonym="العربية" data-language-local-name="Arabic" class="interlanguage-link-target"><span>العربية</span></a></li><li class="interlanguage-link interwiki-az mw-list-item"><a href="https://az.wikipedia.org/wiki/Aromatiklik_termini" title="Aromatiklik termini – Azerbaijani" lang="az" hreflang="az" data-title="Aromatiklik termini" data-language-autonym="Azərbaycanca" data-language-local-name="Azerbaijani" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bn mw-list-item"><a href="https://bn.wikipedia.org/wiki/%E0%A6%85%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%B0%E0%A7%8B%E0%A6%AE%E0%A7%8D%E0%A6%AF%E0%A6%BE%E0%A6%9F%E0%A6%BF%E0%A6%B8%E0%A6%BF%E0%A6%9F%E0%A6%BF" title="অ্যারোম্যাটিসিটি – Bangla" lang="bn" hreflang="bn" data-title="অ্যারোম্যাটিসিটি" data-language-autonym="বাংলা" data-language-local-name="Bangla" class="interlanguage-link-target"><span>বাংলা</span></a></li><li class="interlanguage-link interwiki-bs mw-list-item"><a href="https://bs.wikipedia.org/wiki/Aromati%C4%8Dnost" title="Aromatičnost – Bosnian" lang="bs" hreflang="bs" data-title="Aromatičnost" data-language-autonym="Bosanski" data-language-local-name="Bosnian" class="interlanguage-link-target"><span>Bosanski</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Aromaticitat" title="Aromaticitat – Catalan" lang="ca" hreflang="ca" data-title="Aromaticitat" data-language-autonym="Català" data-language-local-name="Catalan" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cv mw-list-item"><a href="https://cv.wikipedia.org/wiki/%D0%90%D1%80%D0%BE%D0%BC%D0%B0%D1%82%D0%BB%C4%83%D1%85" title="Ароматлăх – Chuvash" lang="cv" hreflang="cv" data-title="Ароматлăх" data-language-autonym="Чӑвашла" data-language-local-name="Chuvash" class="interlanguage-link-target"><span>Чӑвашла</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Aromaticita" title="Aromaticita – Czech" lang="cs" hreflang="cs" data-title="Aromaticita" data-language-autonym="Čeština" data-language-local-name="Czech" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Aromatizit%C3%A4t" title="Aromatizität – German" lang="de" hreflang="de" data-title="Aromatizität" data-language-autonym="Deutsch" data-language-local-name="German" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Aromaatsus" title="Aromaatsus – Estonian" lang="et" hreflang="et" data-title="Aromaatsus" data-language-autonym="Eesti" data-language-local-name="Estonian" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-el mw-list-item"><a href="https://el.wikipedia.org/wiki/%CE%91%CF%81%CF%89%CE%BC%CE%B1%CF%84%CE%B9%CE%BA%CF%8C%CF%84%CE%B7%CF%84%CE%B1" title="Αρωματικότητα – Greek" lang="el" hreflang="el" data-title="Αρωματικότητα" data-language-autonym="Ελληνικά" data-language-local-name="Greek" class="interlanguage-link-target"><span>Ελληνικά</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Aromaticidad" title="Aromaticidad – Spanish" lang="es" hreflang="es" data-title="Aromaticidad" data-language-autonym="Español" data-language-local-name="Spanish" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/Aromatoj" title="Aromatoj – Esperanto" lang="eo" hreflang="eo" data-title="Aromatoj" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Aromatikotasun" title="Aromatikotasun – Basque" lang="eu" hreflang="eu" data-title="Aromatikotasun" data-language-autonym="Euskara" data-language-local-name="Basque" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AE%D8%B5%D9%84%D8%AA_%D8%A2%D8%B1%D9%88%D9%85%D8%A7%D8%AA%DB%8C%DA%A9%DB%8C" title="خصلت آروماتیکی – Persian" lang="fa" hreflang="fa" data-title="خصلت آروماتیکی" data-language-autonym="فارسی" data-language-local-name="Persian" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Aromaticit%C3%A9" title="Aromaticité – French" lang="fr" hreflang="fr" data-title="Aromaticité" data-language-autonym="Français" data-language-local-name="French" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-ga mw-list-item"><a href="https://ga.wikipedia.org/wiki/Aramatacht" title="Aramatacht – Irish" lang="ga" hreflang="ga" data-title="Aramatacht" data-language-autonym="Gaeilge" data-language-local-name="Irish" class="interlanguage-link-target"><span>Gaeilge</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Aromaticidade" title="Aromaticidade – Galician" lang="gl" hreflang="gl" data-title="Aromaticidade" data-language-autonym="Galego" data-language-local-name="Galician" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EB%B0%A9%ED%96%A5%EC%A1%B1%EC%84%B1" title="방향족성 – Korean" lang="ko" hreflang="ko" data-title="방향족성" data-language-autonym="한국어" data-language-local-name="Korean" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-hy mw-list-item"><a href="https://hy.wikipedia.org/wiki/%D4%B1%D6%80%D5%B8%D5%B4%D5%A1%D5%BF%D5%AB%D5%AF%D5%B8%D6%82%D5%A9%D5%B5%D5%B8%D6%82%D5%B6" title="Արոմատիկություն – Armenian" lang="hy" hreflang="hy" data-title="Արոմատիկություն" data-language-autonym="Հայերեն" data-language-local-name="Armenian" class="interlanguage-link-target"><span>Հայերեն</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%8F%E0%A4%B0%E0%A5%8B%E0%A4%AE%E0%A5%88%E0%A4%9F%E0%A4%BF%E0%A4%B8%E0%A4%BF%E0%A4%9F%E0%A5%80" title="एरोमैटिसिटी – Hindi" lang="hi" hreflang="hi" data-title="एरोमैटिसिटी" data-language-autonym="हिन्दी" data-language-local-name="Hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Aromatisitas" title="Aromatisitas – Indonesian" lang="id" hreflang="id" data-title="Aromatisitas" data-language-autonym="Bahasa Indonesia" data-language-local-name="Indonesian" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%90%D7%A8%D7%95%D7%9E%D7%98%D7%99%D7%95%D7%AA" title="ארומטיות – Hebrew" lang="he" hreflang="he" data-title="ארומטיות" data-language-autonym="עברית" data-language-local-name="Hebrew" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-ka mw-list-item"><a href="https://ka.wikipedia.org/wiki/%E1%83%90%E1%83%A0%E1%83%9D%E1%83%9B%E1%83%90%E1%83%A2%E1%83%A3%E1%83%9A%E1%83%9D%E1%83%91%E1%83%90" title="არომატულობა – Georgian" lang="ka" hreflang="ka" data-title="არომატულობა" data-language-autonym="ქართული" data-language-local-name="Georgian" class="interlanguage-link-target"><span>ქართული</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Aromaticiteit" title="Aromaticiteit – Dutch" lang="nl" hreflang="nl" data-title="Aromaticiteit" data-language-autonym="Nederlands" data-language-local-name="Dutch" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-ja badge-Q70893996 mw-list-item" title=""><a href="https://ja.wikipedia.org/wiki/%E8%8A%B3%E9%A6%99%E6%97%8F%E6%80%A7" title="芳香族性 – Japanese" lang="ja" hreflang="ja" data-title="芳香族性" data-language-autonym="日本語" data-language-local-name="Japanese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Aromatisitet" title="Aromatisitet – Norwegian Bokmål" lang="nb" hreflang="nb" data-title="Aromatisitet" data-language-autonym="Norsk bokmål" data-language-local-name="Norwegian Bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-om mw-list-item"><a href="https://om.wikipedia.org/wiki/Aroomaatawaa" title="Aroomaatawaa – Oromo" lang="om" hreflang="om" data-title="Aroomaatawaa" data-language-autonym="Oromoo" data-language-local-name="Oromo" class="interlanguage-link-target"><span>Oromoo</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Aromatyczno%C5%9B%C4%87" title="Aromatyczność – Polish" lang="pl" hreflang="pl" data-title="Aromatyczność" data-language-autonym="Polski" data-language-local-name="Polish" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Aromaticidade" title="Aromaticidade – Portuguese" lang="pt" hreflang="pt" data-title="Aromaticidade" data-language-autonym="Português" data-language-local-name="Portuguese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Aromaticitate" title="Aromaticitate – Romanian" lang="ro" hreflang="ro" data-title="Aromaticitate" data-language-autonym="Română" data-language-local-name="Romanian" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%90%D1%80%D0%BE%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BD%D0%BE%D1%81%D1%82%D1%8C" title="Ароматичность – Russian" lang="ru" hreflang="ru" data-title="Ароматичность" data-language-autonym="Русский" data-language-local-name="Russian" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-si mw-list-item"><a href="https://si.wikipedia.org/wiki/%E0%B6%87%E0%B6%BB%E0%B7%9D%E0%B6%B8%E0%B7%90%E0%B6%A7%E0%B7%92%E0%B6%9A%E0%B6%AD%E0%B7%8F%E0%B7%80" title="ඇරෝමැටිකතාව – Sinhala" lang="si" hreflang="si" data-title="ඇරෝමැටිකතාව" data-language-autonym="සිංහල" data-language-local-name="Sinhala" class="interlanguage-link-target"><span>සිංහල</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Aromati%C4%8Dnost" title="Aromatičnost – Slovenian" lang="sl" hreflang="sl" data-title="Aromatičnost" data-language-autonym="Slovenščina" data-language-local-name="Slovenian" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-sr badge-Q70893996 mw-list-item" title=""><a href="https://sr.wikipedia.org/wiki/Aromati%C4%8Dnost" title="Aromatičnost – Serbian" lang="sr" hreflang="sr" data-title="Aromatičnost" data-language-autonym="Српски / srpski" data-language-local-name="Serbian" class="interlanguage-link-target"><span>Српски / srpski</span></a></li><li class="interlanguage-link interwiki-sh mw-list-item"><a href="https://sh.wikipedia.org/wiki/Aromati%C4%8Dnost" title="Aromatičnost – Serbo-Croatian" lang="sh" hreflang="sh" data-title="Aromatičnost" data-language-autonym="Srpskohrvatski / српскохрватски" data-language-local-name="Serbo-Croatian" class="interlanguage-link-target"><span>Srpskohrvatski / српскохрватски</span></a></li><li class="interlanguage-link interwiki-sv mw-list-item"><a href="https://sv.wikipedia.org/wiki/Aromaticitet" title="Aromaticitet – Swedish" lang="sv" hreflang="sv" data-title="Aromaticitet" data-language-autonym="Svenska" data-language-local-name="Swedish" class="interlanguage-link-target"><span>Svenska</span></a></li><li class="interlanguage-link interwiki-ta mw-list-item"><a href="https://ta.wikipedia.org/wiki/%E0%AE%85%E0%AE%B0%E0%AF%8B%E0%AE%AE%E0%AE%BE%E0%AE%9F%E0%AF%8D%E0%AE%9F%E0%AE%BF%E0%AE%AF%E0%AE%AE%E0%AF%8D" title="அரோமாட்டியம் – Tamil" lang="ta" hreflang="ta" data-title="அரோமாட்டியம்" data-language-autonym="தமிழ்" data-language-local-name="Tamil" class="interlanguage-link-target"><span>தமிழ்</span></a></li><li class="interlanguage-link interwiki-tr mw-list-item"><a href="https://tr.wikipedia.org/wiki/Aromatiklik" title="Aromatiklik – Turkish" lang="tr" hreflang="tr" data-title="Aromatiklik" data-language-autonym="Türkçe" data-language-local-name="Turkish" class="interlanguage-link-target"><span>Türkçe</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%90%D1%80%D0%BE%D0%BC%D0%B0%D1%82%D0%B8%D1%87%D0%BD%D1%96%D1%81%D1%82%D1%8C" title="Ароматичність – Ukrainian" lang="uk" hreflang="uk" data-title="Ароматичність" data-language-autonym="Українська" data-language-local-name="Ukrainian" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-wuu mw-list-item"><a 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searchaux" style="display:none">Chemical property</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">"Aromatic" redirects here. For meanings related to odor, see <a href="/wiki/Aroma_compound" title="Aroma compound">aroma compound</a>. For the lack of romantic attraction, see <a href="/wiki/Aromantic" class="mw-redirect" title="Aromantic">aromantic</a>.</div> <p class="mw-empty-elt"> </p> <figure class="mw-default-size mw-halign-right" typeof="mw:File/Thumb"><a href="/wiki/File:Benzene_resonance_structures.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/0/03/Benzene_resonance_structures.png/220px-Benzene_resonance_structures.png" decoding="async" width="220" height="186" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/0/03/Benzene_resonance_structures.png/330px-Benzene_resonance_structures.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/0/03/Benzene_resonance_structures.png/440px-Benzene_resonance_structures.png 2x" data-file-width="1854" data-file-height="1564" /></a><figcaption>Two different <a href="/wiki/Resonance_(chemistry)" title="Resonance (chemistry)">resonance</a> forms of benzene (top) combine to produce an average structure (bottom)</figcaption></figure> <p>In <a href="/wiki/Organic_chemistry" title="Organic chemistry">organic chemistry</a>, <b>aromaticity</b> is a chemical property describing the way in which a <a href="/wiki/Conjugated_system" title="Conjugated system">conjugated</a> ring of <a href="/wiki/Unsaturated_bond" class="mw-redirect" title="Unsaturated bond">unsaturated bonds</a>, <a href="/wiki/Lone_pair" title="Lone pair">lone pairs</a>, or <a href="/wiki/Empty_orbital" class="mw-redirect" title="Empty orbital">empty orbitals</a> exhibits a stabilization stronger than would be expected by the stabilization of conjugation alone. The earliest use of the term was in an article by <a href="/wiki/August_Wilhelm_Hofmann" class="mw-redirect" title="August Wilhelm Hofmann">August Wilhelm Hofmann</a> in 1855.<sup id="cite_ref-Hofmann1855_1-0" class="reference"><a href="#cite_note-Hofmann1855-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> There is no general relationship between aromaticity as a chemical property and the <a href="/wiki/Olfaction" class="mw-redirect" title="Olfaction">olfactory</a> properties of such compounds. </p><p>Aromaticity can also be considered a manifestation of cyclic <a href="/wiki/Delocalization" class="mw-redirect" title="Delocalization">delocalization</a> and of <a href="/wiki/Resonance_(chemistry)" title="Resonance (chemistry)">resonance</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup> This is usually considered to be because <a href="/wiki/Electron" title="Electron">electrons</a> are free to cycle around circular arrangements of <a href="/wiki/Atom" title="Atom">atoms</a> that are alternately single- and double-<a href="/wiki/Covalent_bond" title="Covalent bond">bonded</a> to one another. These bonds may be seen as a hybrid of a single bond and a double bond, each bond in the ring identical to every other. This commonly seen model of aromatic rings, namely the idea that <a href="/wiki/Benzene" title="Benzene">benzene</a> was formed from a six-membered carbon ring with alternating single and double bonds (cyclohexatriene), was developed by <a href="/wiki/Friedrich_August_Kekul%C3%A9_von_Stradonitz" class="mw-redirect" title="Friedrich August Kekulé von Stradonitz">Kekulé</a> (see <a href="#History">History</a> section below). The model for benzene consists of two <a href="/wiki/Resonance_(chemistry)" title="Resonance (chemistry)">resonance</a> forms, which corresponds to the double and single bonds superimposing to give rise to six one-and-a-half bonds. Benzene is a more stable molecule than would be expected without accounting for charge delocalization. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Theory">Theory</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=1" title="Edit section: Theory"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-halign-right" typeof="mw:File"><a href="/wiki/File:Benzene-6H-delocalized.svg" class="mw-file-description" title="Modern depiction of benzene"><img alt="Modern depiction of benzene" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Benzene-6H-delocalized.svg/100px-Benzene-6H-delocalized.svg.png" decoding="async" width="100" height="100" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Benzene-6H-delocalized.svg/150px-Benzene-6H-delocalized.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9a/Benzene-6H-delocalized.svg/200px-Benzene-6H-delocalized.svg.png 2x" data-file-width="500" data-file-height="500" /></a><figcaption>Modern depiction of benzene</figcaption></figure> <p>As is standard for <a href="/wiki/Resonance_(chemistry)" title="Resonance (chemistry)">resonance diagrams</a>, a double-headed arrow is used to indicate that the two structures are not distinct entities, but merely hypothetical possibilities. Neither is an accurate representation of the <i>actual</i> compound, which is best represented by a hybrid (average) of these structures, which can be seen at right. A C=C bond is shorter than a C−C bond, but benzene is perfectly hexagonal—all six carbon-carbon bonds have the same <a href="/wiki/Bond_length" title="Bond length">length</a>, intermediate between that of a <a href="/wiki/Single_bond" title="Single bond">single</a> and that of a <a href="/wiki/Double_bond" title="Double bond">double bond</a>. </p><p>A better representation is that of the circular π bond (Armstrong's <i>inner cycle</i>), in which the electron density is evenly distributed through a <a href="/wiki/Pi_bond" title="Pi bond">π-bond</a> above and below the ring. This model more correctly represents the location of electron density within the aromatic ring. </p><p>The single bonds are formed with electrons in line between the carbon nuclei — these are called <a href="/wiki/Sigma_bond" title="Sigma bond">σ-bonds</a>. Double bonds consist of a σ-bond and a π-bond. The π-bonds are formed from overlap of <a href="/wiki/Atomic_orbital" title="Atomic orbital">atomic p-orbitals</a> above and below the plane of the ring. The following diagram shows the positions of these p-orbitals: </p><p><span typeof="mw:File"><a href="/wiki/File:Benzene-orbitals.png" class="mw-file-description" title="Benzene electron orbitals"><img alt="Benzene electron orbitals" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Benzene-orbitals.png/330px-Benzene-orbitals.png" decoding="async" width="330" height="180" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Benzene-orbitals.png/495px-Benzene-orbitals.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/5b/Benzene-orbitals.png/660px-Benzene-orbitals.png 2x" data-file-width="753" data-file-height="411" /></a></span> </p><p>Since they are out of the plane of the atoms, these orbitals can interact with each other freely, and become delocalized. This means that, instead of being tied to one atom of carbon, each electron is shared by all six in the ring. Thus, there are not enough electrons to form double bonds on all the carbon atoms, but the "extra" electrons strengthen all of the bonds on the ring equally. The resulting <a href="/wiki/Molecular_orbital" title="Molecular orbital">molecular orbital</a> has π symmetry. </p><p><span typeof="mw:File"><a href="/wiki/File:Benzene_Orbitals.svg" class="mw-file-description" title="Benzene orbital delocalization"><img alt="Benzene orbital delocalization" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/90/Benzene_Orbitals.svg/330px-Benzene_Orbitals.svg.png" decoding="async" width="330" height="176" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/90/Benzene_Orbitals.svg/495px-Benzene_Orbitals.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/90/Benzene_Orbitals.svg/660px-Benzene_Orbitals.svg.png 2x" data-file-width="750" data-file-height="400" /></a></span> </p> <div class="mw-heading mw-heading2"><h2 id="History">History</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=2" title="Edit section: History"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-heading mw-heading3"><h3 id="The_term_"aromatic""><span id="The_term_.22aromatic.22"></span>The term "aromatic"</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=3" title="Edit section: The term "aromatic""><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The first known use of the word "aromatic" as a <i>chemical</i> term — namely, to apply to compounds that contain the <a href="/wiki/Phenyl" class="mw-redirect" title="Phenyl">phenyl</a> <a href="/wiki/Radical_(chemistry)" title="Radical (chemistry)">radical</a> — occurs in an article by <a href="/wiki/August_Wilhelm_Hofmann" class="mw-redirect" title="August Wilhelm Hofmann">August Wilhelm Hofmann</a> in 1855.<sup id="cite_ref-Hofmann1855_1-1" class="reference"><a href="#cite_note-Hofmann1855-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> If this is indeed the earliest introduction of the term, it is curious that Hofmann says nothing about why he introduced an adjective indicating <a href="/wiki/Olfactory" class="mw-redirect" title="Olfactory">olfactory</a> character to apply to a group of chemical substances only some of which have notable aromas. Also, many of the most odoriferous organic substances known are <a href="/wiki/Terpenes" class="mw-redirect" title="Terpenes">terpenes</a>, which are not aromatic in the chemical sense. But terpenes and benzenoid substances do have a chemical characteristic in common, namely higher unsaturation indices than many <a href="/wiki/Aliphatic_compound" title="Aliphatic compound">aliphatic compounds</a>, and Hofmann may not have been making a distinction between the two categories. </p> <div class="mw-heading mw-heading3"><h3 id="The_structure_of_the_benzene_ring">The structure of the benzene ring</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=4" title="Edit section: The structure of the benzene ring"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Historic_Benzene_Formulae_Kekul%C3%A9_(original).png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Historic_Benzene_Formulae_Kekul%C3%A9_%28original%29.png/300px-Historic_Benzene_Formulae_Kekul%C3%A9_%28original%29.png" decoding="async" width="300" height="104" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Historic_Benzene_Formulae_Kekul%C3%A9_%28original%29.png/450px-Historic_Benzene_Formulae_Kekul%C3%A9_%28original%29.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Historic_Benzene_Formulae_Kekul%C3%A9_%28original%29.png/600px-Historic_Benzene_Formulae_Kekul%C3%A9_%28original%29.png 2x" data-file-width="1081" data-file-height="375" /></a><figcaption>Historic benzene formulae as proposed by Kekulé.<sup id="cite_ref-August_Kekulé_5-0" class="reference"><a href="#cite_note-August_Kekulé-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup></figcaption></figure> <p>In the 19th century chemists found it puzzling that benzene could be so unreactive toward addition reactions, given its presumed high degree of unsaturation. The cyclohexatriene structure for <a href="/wiki/Benzene" title="Benzene">benzene</a> was first proposed by <a href="/wiki/August_Kekul%C3%A9" title="August Kekulé">August Kekulé</a> in 1865. Over the next few decades, most chemists readily accepted this structure, since it accounted for most of the known isomeric relationships of aromatic chemistry. </p><p>Between 1897 and 1906, <a href="/wiki/J._J._Thomson" title="J. J. Thomson">J. J. Thomson</a>, the discoverer of the electron, proposed three equivalent electrons between each carbon atom in benzene. </p><p>An explanation for the exceptional stability of benzene is conventionally attributed to <a href="/wiki/Robert_Robinson_(organic_chemist)" class="mw-redirect" title="Robert Robinson (organic chemist)">Sir Robert Robinson</a>, who was apparently the first (in 1925)<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup> to coin the term <i>aromatic sextet</i> as a group of six electrons that resists disruption. </p><p>In fact, this concept can be traced further back, via Ernest Crocker in 1922,<sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup> to <a href="/wiki/Henry_Edward_Armstrong" title="Henry Edward Armstrong">Henry Edward Armstrong</a>, who in 1890 wrote "the (six) centric affinities act within a cycle...benzene may be represented by a <b>double ring</b> (<i>sic</i>) ... and when an additive compound is formed, the inner cycle of affinity suffers disruption, the contiguous carbon-atoms to which nothing has been attached of necessity acquire the ethylenic condition".<sup id="cite_ref-8" class="reference"><a href="#cite_note-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup class="noprint Inline-Template" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Verifiability" title="Wikipedia:Verifiability"><span title="The material near this tag needs to be fact-checked with the cited source(s). (January 2014)">verification needed</span></a></i>]</sup> </p><p>Here, Armstrong is describing at least four modern concepts. First, his "affinity" is better known nowadays as the <a href="/wiki/Electron" title="Electron">electron</a>, which was to be discovered only seven years later by J. J. Thomson. Second, he is describing <a href="/wiki/Electrophilic_aromatic_substitution" title="Electrophilic aromatic substitution">electrophilic aromatic substitution</a>, proceeding (third) through a <a href="/wiki/Wheland_intermediate" class="mw-redirect" title="Wheland intermediate">Wheland intermediate</a>, in which (fourth) the <a href="/wiki/Conjugated_system" title="Conjugated system">conjugation</a> of the ring is broken. He introduced the symbol <b>C</b> centered on the ring as a shorthand for the <i>inner cycle</i>, thus anticipating <a href="/wiki/Erich_Clar" title="Erich Clar">Erich Clar</a>'s notation. It is argued that he also anticipated the nature of <a href="/wiki/Wave" title="Wave">wave mechanics</a>, since he recognized that his affinities had direction, not merely being point particles, and collectively having a distribution that could be altered by introducing substituents onto the benzene ring (<i>much as the distribution of the electric charge in a body is altered by bringing it near to another body</i>). </p><p>The <a href="/wiki/Quantum_mechanical" class="mw-redirect" title="Quantum mechanical">quantum mechanical</a> origins of this stability, or aromaticity, were first modelled by <a href="/wiki/Erich_Huckel" class="mw-redirect" title="Erich Huckel">Hückel</a> in 1931. He was the first to separate the bonding electrons into sigma and pi electrons. </p> <div class="mw-heading mw-heading2"><h2 id="Characteristics_of_aromatic_(aryl)_compounds"><span id="Characteristics_of_aromatic_.28aryl.29_compounds"></span>Characteristics of aromatic (aryl) compounds</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=5" title="Edit section: Characteristics of aromatic (aryl) compounds"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>An aromatic (or <a href="/wiki/Aryl" class="mw-redirect" title="Aryl">aryl</a>) compound contains a set of <a href="/wiki/Covalent_bond" title="Covalent bond">covalently bound</a> atoms with specific characteristics: </p> <ol><li>A <a href="/wiki/Delocalized_electron" title="Delocalized electron">delocalized</a> conjugated <a href="/wiki/Pi_electron" class="mw-redirect" title="Pi electron">π</a> system, most commonly an arrangement of alternating single and double <a href="/wiki/Covalent_bond" title="Covalent bond">bonds</a></li> <li><a href="/wiki/Coplanar" class="mw-redirect" title="Coplanar">Coplanar</a> structure, with all the contributing atoms in the same plane</li> <li>Contributing atoms arranged in one or more rings</li> <li>A number of π delocalized electrons that is <a href="/wiki/Singly_even" class="mw-redirect" title="Singly even">even, but not a multiple of 4</a>. That is, 4n + 2 number of π electrons, where n=0, 1, 2, 3, and so on. This is known as <a href="/wiki/H%C3%BCckel%27s_rule" title="Hückel's rule">Hückel's Rule</a>.</li></ol> <p>Whereas benzene is aromatic (6 electrons, from 3 double bonds), <a href="/wiki/Cyclobutadiene" title="Cyclobutadiene">cyclobutadiene</a> is not, since the number of π delocalized electrons is 4, which of course is a multiple of 4. The cyclobutadienide (2−) ion, however, is aromatic (6 electrons). An atom in an aromatic system can have other electrons that are not part of the system, and are therefore ignored for the 4n + 2 rule. In <a href="/wiki/Furan" title="Furan">furan</a>, the oxygen atom is sp² hybridized. One lone pair is in the π system and the other in the plane of the ring (analogous to C-H bond on the other positions). There are 6 π electrons, so furan is aromatic. </p><p>Aromatic molecules typically display enhanced chemical stability, compared to similar non-aromatic molecules. A molecule that can be aromatic will tend to alter its electronic or conformational structure to be in this situation. This extra stability changes the chemistry of the molecule. Aromatic compounds undergo <a href="/wiki/Electrophilic_aromatic_substitution" title="Electrophilic aromatic substitution">electrophilic aromatic substitution</a> and <a href="/wiki/Nucleophilic_aromatic_substitution" title="Nucleophilic aromatic substitution">nucleophilic aromatic substitution</a> reactions, but not <a href="/wiki/Electrophilic_addition" title="Electrophilic addition">electrophilic addition</a> reactions as happens with carbon-carbon double bonds. </p><p>Many of the earliest-known examples of aromatic compounds, such as benzene and toluene, have distinctive pleasant smells. This property led to the term "aromatic" for this class of compounds, and hence the term "aromaticity" for the eventually discovered electronic property. </p><p>The circulating π electrons in an aromatic molecule produce <a href="/wiki/Aromatic_ring_current" title="Aromatic ring current">ring currents</a> that oppose the applied magnetic field in <a href="/wiki/NMR" class="mw-redirect" title="NMR">NMR</a>.<sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup> The NMR signal of protons in the plane of an aromatic ring are shifted substantially further down-field than those on non-aromatic sp² carbons. This is an important way of detecting aromaticity. By the same mechanism, the signals of protons located near the ring axis are shifted up-field. </p><p>Aromatic molecules are able to interact with each other in so-called <a href="/wiki/Aromatic_interaction" class="mw-redirect" title="Aromatic interaction">π-π stacking</a>: The π systems form two parallel rings overlap in a "face-to-face" orientation. Aromatic molecules are also able to interact with each other in an "edge-to-face" orientation: The slight positive charge of the substituents on the ring atoms of one molecule are attracted to the slight negative charge of the aromatic system on another molecule. </p><p>Planar monocyclic molecules containing 4n π electrons are called <a href="/wiki/Antiaromaticity" title="Antiaromaticity">antiaromatic</a> and are, in general, destabilized. Molecules that could be antiaromatic will tend to alter their electronic or conformational structure to avoid this situation, thereby becoming non-aromatic. For example, <a href="/wiki/Cyclooctatetraene" title="Cyclooctatetraene">cyclooctatetraene</a> (COT) distorts itself out of planarity, breaking π overlap between adjacent double bonds. Relatively recently, <a href="/wiki/Cyclobutadiene" title="Cyclobutadiene">cyclobutadiene</a> was discovered to adopt an asymmetric, rectangular configuration in which single and double bonds indeed alternate; there is no resonance and the single bonds are markedly longer than the double bonds, reducing unfavorable p-orbital overlap. This reduction of symmetry lifts the degeneracy of the two formerly non-bonding molecular orbitals, which by <a href="/wiki/Hund%27s_rule" class="mw-redirect" title="Hund's rule">Hund's rule</a> forces the two unpaired electrons into a new, weakly bonding orbital (and also creates a weakly antibonding orbital). Hence, cyclobutadiene is non-aromatic; the strain of the asymmetric configuration outweighs the anti-aromatic destabilization that would afflict the symmetric, square configuration. </p> <div class="mw-heading mw-heading2"><h2 id="Importance_of_aromatic_compounds">Importance of aromatic compounds</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=6" title="Edit section: Importance of aromatic compounds"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Aromatic compounds play key roles in the biochemistry of all living things. The four aromatic amino acids <a href="/wiki/Histidine" title="Histidine">histidine</a>, <a href="/wiki/Phenylalanine" title="Phenylalanine">phenylalanine</a>, <a href="/wiki/Tryptophan" title="Tryptophan">tryptophan</a>, and <a href="/wiki/Tyrosine" title="Tyrosine">tyrosine</a> each serve as one of the 20 basic building-blocks of proteins. Further, all 5 <a href="/wiki/Nucleotide" title="Nucleotide">nucleotides</a> (<a href="/wiki/Adenine" title="Adenine">adenine</a>, <a href="/wiki/Thymine" title="Thymine">thymine</a>, <a href="/wiki/Cytosine" title="Cytosine">cytosine</a>, <a href="/wiki/Guanine" title="Guanine">guanine</a>, and <a href="/wiki/Uracil" title="Uracil">uracil</a>) that make up the sequence of the genetic code in DNA and RNA are aromatic <a href="/wiki/Purines" class="mw-redirect" title="Purines">purines</a> or <a href="/wiki/Pyrimidines" class="mw-redirect" title="Pyrimidines">pyrimidines</a>. The molecule <a href="/wiki/Heme" title="Heme">heme</a> contains an aromatic system with 22 π electrons. <a href="/wiki/Chlorophyll" title="Chlorophyll">Chlorophyll</a> also has a similar aromatic system. </p><p>Aromatic compounds are important in industry. Key <a href="/wiki/Aromatic_hydrocarbon" class="mw-redirect" title="Aromatic hydrocarbon">aromatic hydrocarbons</a> of commercial interest are <a href="/wiki/Benzene" title="Benzene">benzene</a>, <a href="/wiki/Toluene" title="Toluene">toluene</a>, <a href="/wiki/Xylene" title="Xylene"><i>ortho</i>-xylene</a> and <a href="/wiki/Xylene" title="Xylene"><i>para</i>-xylene</a>. About 35 million tonnes are produced worldwide every year. They are extracted from complex mixtures obtained by the refining of oil or by distillation of coal tar, and are used to produce a range of important chemicals and polymers, including <a href="/wiki/Styrene" title="Styrene">styrene</a>, <a href="/wiki/Phenol" title="Phenol">phenol</a>, <a href="/wiki/Aniline" title="Aniline">aniline</a>, <a href="/wiki/Polyester" title="Polyester">polyester</a> and <a href="/wiki/Nylon" title="Nylon">nylon</a>. </p> <div class="mw-heading mw-heading2"><h2 id="Types_of_aromatic_compounds">Types of aromatic compounds</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=7" title="Edit section: Types of aromatic compounds"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>The overwhelming majority of aromatic compounds are compounds of carbon, but they need not be hydrocarbons. </p> <div class="mw-heading mw-heading3"><h3 id="Neutral_homocyclics">Neutral homocyclics</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=8" title="Edit section: Neutral homocyclics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Benzene" title="Benzene">Benzene</a>, as well as most other <a href="/wiki/Annulene" title="Annulene">annulenes</a> (<a href="/wiki/Cyclodecapentaene" title="Cyclodecapentaene">cyclodecapentaene</a> excepted) with the formula C<sub>n</sub>H<sub>n</sub> where n ≥ 4 and is an even number, such as <a href="/wiki/Cyclotetradecaheptaene" title="Cyclotetradecaheptaene">cyclotetradecaheptaene</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Heterocyclics">Heterocyclics</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=9" title="Edit section: Heterocyclics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>In <a href="/wiki/Heterocyclic_compound" title="Heterocyclic compound">heterocyclic</a> aromatics (<b>heteroaromats</b>), one or more of the atoms in the aromatic ring is of an element other than carbon. This can lessen the ring's aromaticity, and thus (as in the case of <a href="/wiki/Furan" title="Furan">furan</a>) increase its reactivity. Other examples include <a href="/wiki/Pyridine" title="Pyridine">pyridine</a>, <a href="/wiki/Pyrazine" title="Pyrazine">pyrazine</a>, <a href="/wiki/Imidazole" title="Imidazole">imidazole</a>, <a href="/wiki/Pyrazole" title="Pyrazole">pyrazole</a>, <a href="/wiki/Oxazole" title="Oxazole">oxazole</a>, <a href="/wiki/Thiophene" title="Thiophene">thiophene</a>, and their <a href="/wiki/Benzannulated" class="mw-redirect" title="Benzannulated">benzannulated</a> analogs (<a href="/wiki/Benzimidazole" title="Benzimidazole">benzimidazole</a>, for example). </p> <div class="mw-heading mw-heading3"><h3 id="Polycyclics">Polycyclics</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=10" title="Edit section: Polycyclics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p><a href="/wiki/Polycyclic_aromatic_hydrocarbon" title="Polycyclic aromatic hydrocarbon">Polycyclic aromatic hydrocarbons</a> are molecules containing two or more simple aromatic rings fused together by sharing two neighboring carbon atoms (see also <a href="/wiki/Simple_aromatic_ring" title="Simple aromatic ring">simple aromatic rings</a>). Examples are <a href="/wiki/Naphthalene" title="Naphthalene">naphthalene</a>, <a href="/wiki/Anthracene" title="Anthracene">anthracene</a>, and <a href="/wiki/Phenanthrene" title="Phenanthrene">phenanthrene</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Substituted_aromatics">Substituted aromatics</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=11" title="Edit section: Substituted aromatics"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Many <a href="/wiki/Chemical_compound" title="Chemical compound">chemical compounds</a> are aromatic rings with other <a href="/wiki/Functional_group" title="Functional group">functional groups</a> attached. Examples include <a href="/wiki/Trinitrotoluene" class="mw-redirect" title="Trinitrotoluene">trinitrotoluene</a> (TNT), <a href="/wiki/Aspirin" title="Aspirin">acetylsalicylic acid</a> (aspirin), <a href="/wiki/Paracetamol" title="Paracetamol">paracetamol</a>, and the nucleotides of <a href="/wiki/DNA" title="DNA">DNA</a>. </p> <div class="mw-heading mw-heading3"><h3 id="Atypical_aromatic_compounds">Atypical aromatic compounds</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=12" title="Edit section: Atypical aromatic compounds"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Aromaticity is found in <a href="/wiki/Ion" title="Ion">ions</a> as well: the <a href="/wiki/Cyclopropenyl" class="mw-redirect" title="Cyclopropenyl">cyclopropenyl</a> cation (2e system), the <a href="/wiki/Cyclopentadienyl" title="Cyclopentadienyl">cyclopentadienyl</a> anion (6e system), the <a href="/wiki/Tropylium" class="mw-redirect" title="Tropylium">tropylium</a> ion (6e), and the <a href="/wiki/Cyclooctatetraene" title="Cyclooctatetraene">cyclooctatetraene</a> dianion (10e). Aromatic properties have been attributed to non-benzenoid compounds such as <a href="/wiki/Tropone" title="Tropone">tropone</a>. Aromatic properties are tested to the limit in a class of compounds called <a href="/wiki/Cyclophane" title="Cyclophane">cyclophanes</a>. </p><p>A special case of aromaticity is found in <a href="/wiki/Homoaromaticity" title="Homoaromaticity">homoaromaticity</a> where conjugation is interrupted by a single <i>sp</i>³ <a href="/wiki/Orbital_hybridisation" title="Orbital hybridisation">hybridized</a> carbon atom. </p><p>When carbon in benzene is replaced by other elements in <a href="/wiki/Borabenzene" title="Borabenzene">borabenzene</a>, <a href="/wiki/Silabenzene" title="Silabenzene">silabenzene</a>, <a href="/wiki/Germanabenzene" class="mw-redirect" title="Germanabenzene">germanabenzene</a>, <a href="/wiki/Stannabenzene" title="Stannabenzene">stannabenzene</a>, <a href="/wiki/Phosphorine" title="Phosphorine">phosphorine</a> or <a href="/wiki/Pyrylium_salt" class="mw-redirect" title="Pyrylium salt">pyrylium salts</a> the aromaticity is still retained. Aromaticity also occurs in compounds that are not carbon-based at all. Inorganic 6-membered-ring compounds analogous to benzene have been synthesized. <a href="/w/index.php?title=Hexasilabenzene&action=edit&redlink=1" class="new" title="Hexasilabenzene (page does not exist)">Hexasilabenzene</a> (Si<sub>6</sub>H<sub>6</sub>) and <a href="/wiki/Borazine" title="Borazine">borazine</a> (B<sub>3</sub>N<sub>3</sub>H<sub>6</sub>) are structurally analogous to benzene, with the carbon atoms replaced by another element or elements. In borazine, the boron and nitrogen atoms alternate around the ring. Quite recently, the aromaticity of planar Si<sub>5</sub><sup>6-</sup> rings occurring in the Zintl phase Li<sub>12</sub>Si<sub>7</sub> was experimentally evidenced by Li solid state NMR.<sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup> </p><p><a href="/wiki/Metal_aromaticity" title="Metal aromaticity">Metal aromaticity</a> is believed to exist in certain metal clusters of aluminium.<sup class="noprint Inline-Template Template-Fact" style="white-space:nowrap;">[<i><a href="/wiki/Wikipedia:Citation_needed" title="Wikipedia:Citation needed"><span title="This claim needs references to reliable sources. (December 2023)">citation needed</span></a></i>]</sup> </p><p><a href="/wiki/M%C3%B6bius_aromaticity" title="Möbius aromaticity">Möbius aromaticity</a> occurs when a cyclic system of molecular orbitals, formed from p<sub>π</sub> <a href="/wiki/Atomic_orbitals" class="mw-redirect" title="Atomic orbitals">atomic orbitals</a> and populated in a <a href="/wiki/Closed_shell" class="mw-redirect" title="Closed shell">closed shell</a> by 4n (n is an integer) electrons, is given a single half-twist to correspond to a <a href="/wiki/M%C3%B6bius_strip" title="Möbius strip">Möbius strip</a>. A π system with 4n electrons in a flat (non-twisted) ring would be anti-aromatic, and therefore highly unstable, due to the symmetry of the combinations of p atomic orbitals. By twisting the ring, the symmetry of the system changes and becomes allowed (see also <a href="/wiki/M%C3%B6bius%E2%80%93H%C3%BCckel_concept" title="Möbius–Hückel concept">Möbius–Hückel concept</a> for details). Because the twist can be <a href="/wiki/Left-handed" class="mw-redirect" title="Left-handed">left-handed</a> or <a href="/wiki/Right-handed" class="mw-redirect" title="Right-handed">right-handed</a>, the resulting Möbius aromatics are <i>dissymmetric</i> or <a href="/wiki/Chirality_(chemistry)" title="Chirality (chemistry)">chiral</a>. As of 2012, there is no proof that a Möbius aromatic molecule was synthesized.<sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup> Aromatics with two half-twists corresponding to the <a href="/w/index.php?title=Paradromic&action=edit&redlink=1" class="new" title="Paradromic (page does not exist)">paradromic</a> topologies were first suggested by <a href="/wiki/Johann_Benedict_Listing" title="Johann Benedict Listing">Johann Listing</a>.<sup id="cite_ref-13" class="reference"><a href="#cite_note-13"><span class="cite-bracket">[</span>13<span class="cite-bracket">]</span></a></sup> In <a href="/wiki/Carbo-benzene" class="mw-redirect" title="Carbo-benzene">carbo-benzene</a> the ring bonds are extended with alkyne and allene groups. </p> <div class="mw-heading mw-heading4"><h4 id="Y-aromaticity">Y-aromaticity</h4><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=13" title="Edit section: Y-aromaticity"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Y-aromaticity is a concept which was developed to explain the extraordinary stability and high basicity of the <a href="/wiki/Guanidine" title="Guanidine">guanidinium</a> cation. Guanidinium does not have a ring structure but has six π-electrons which are delocalized over the molecule. However, this concept is controversial and some authors have stressed different effects.<sup id="cite_ref-14" class="reference"><a href="#cite_note-14"><span class="cite-bracket">[</span>14<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-15" class="reference"><a href="#cite_note-15"><span class="cite-bracket">[</span>15<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-16" class="reference"><a href="#cite_note-16"><span class="cite-bracket">[</span>16<span class="cite-bracket">]</span></a></sup> </p> <div class="mw-heading mw-heading2"><h2 id="See_also">See also</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=14" title="Edit section: See also"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <ul><li><a href="/wiki/Aromatic_hydrocarbon" class="mw-redirect" title="Aromatic hydrocarbon">Aromatic hydrocarbon</a></li> <li><a href="/wiki/Aromatic_amine" title="Aromatic amine">Aromatic amine</a></li> <li><a href="/wiki/BTX_(chemistry)" title="BTX (chemistry)">BTX (chemistry)</a></li> <li><a href="/wiki/Polycyclic_aromatic_hydrocarbon" title="Polycyclic aromatic hydrocarbon">PAH</a></li> <li><a href="/wiki/Saturate,_Aromatic,_Resin_and_Asphaltene" class="mw-redirect" title="Saturate, Aromatic, Resin and Asphaltene">SARA</a></li> <li><a href="/wiki/Simple_aromatic_ring" title="Simple aromatic ring">Simple aromatic ring</a></li> <li><a href="/wiki/Pi_interaction" class="mw-redirect" title="Pi interaction">Pi interaction</a></li> <li><a href="/wiki/Avoided_crossing" title="Avoided crossing">Avoided crossing</a></li></ul> <div class="mw-heading mw-heading2"><h2 id="References">References</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Aromaticity&action=edit&section=15" title="Edit section: References"><span>edit</span></a><span class="mw-editsection-bracket">]</span></span></div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist"> <div 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bond">Charge-shift</a></li> <li><a href="/wiki/Hapticity" title="Hapticity">Hapticity</a></li> <li><a href="/wiki/Conjugated_system" title="Conjugated system">Conjugation</a></li> <li><a href="/wiki/Hyperconjugation" title="Hyperconjugation">Hyperconjugation</a></li> <li><a class="mw-selflink selflink">Aromaticity</a> <ul><li><a href="/wiki/Homoaromaticity" title="Homoaromaticity">homo</a></li> <li><a href="/wiki/Bicycloaromaticity" title="Bicycloaromaticity">bicyclo</a></li></ul></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Metallic_bonding" title="Metallic bonding">Metallic</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Metal_aromaticity" title="Metal aromaticity">Metal aromaticity</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Ionic_bonding" title="Ionic bonding">Ionic</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li class="mw-empty-elt"></li></ul> </div></td></tr></tbody></table><div></div></td><td class="noviewer navbox-image" rowspan="4" style="width:1px;padding:0 0 0 2px"><div><span typeof="mw:File"><a href="/wiki/File:Ligatio-covalens.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Ligatio-covalens.svg/200px-Ligatio-covalens.svg.png" decoding="async" width="200" height="89" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/21/Ligatio-covalens.svg/300px-Ligatio-covalens.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/21/Ligatio-covalens.svg/400px-Ligatio-covalens.svg.png 2x" data-file-width="597" data-file-height="265" /></a></span><br /><span typeof="mw:File"><a href="/wiki/File:Chemfm_carbon_monoxide_3_1.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/77/Chemfm_carbon_monoxide_3_1.svg/200px-Chemfm_carbon_monoxide_3_1.svg.png" decoding="async" width="200" height="113" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/77/Chemfm_carbon_monoxide_3_1.svg/300px-Chemfm_carbon_monoxide_3_1.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/77/Chemfm_carbon_monoxide_3_1.svg/400px-Chemfm_carbon_monoxide_3_1.svg.png 2x" data-file-width="99" data-file-height="56" /></a></span><br /><span typeof="mw:File"><a href="/wiki/File:Pi-Bond.svg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Pi-Bond.svg/200px-Pi-Bond.svg.png" decoding="async" width="200" height="113" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/70/Pi-Bond.svg/300px-Pi-Bond.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/70/Pi-Bond.svg/400px-Pi-Bond.svg.png 2x" data-file-width="1920" data-file-height="1080" /></a></span></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Intermolecular_force" title="Intermolecular force">Intermolecular</a><br />(weak)</th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"></div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Van_der_Waals_force" title="Van der Waals force">Van der Waals<br />forces</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/London_dispersion_force" title="London dispersion force">London dispersion</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Hydrogen_bond" title="Hydrogen bond">Hydrogen</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Low-barrier_hydrogen_bond" title="Low-barrier hydrogen bond">Low-barrier</a></li> <li><a href="/wiki/Resonance-assisted_hydrogen_bond" class="mw-redirect" title="Resonance-assisted hydrogen bond">Resonance-assisted</a></li> <li><a href="/wiki/Symmetric_hydrogen_bond" title="Symmetric hydrogen bond">Symmetric</a></li> <li><a href="/wiki/Dihydrogen_bond" title="Dihydrogen bond">Dihydrogen bonds</a></li> <li><a href="/wiki/C%E2%80%93H%C2%B7%C2%B7%C2%B7O_interaction" title="C–H···O interaction">C–H···O interaction</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Non-covalent_interactions" class="mw-redirect" title="Non-covalent interactions">Noncovalent</a><br />other</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Mechanically_interlocked_molecular_architectures" title="Mechanically interlocked molecular architectures">Mechanical</a></li> <li><a href="/wiki/Halogen_bond" title="Halogen bond">Halogen</a></li> <li><a href="/wiki/Chalcogen_bond" title="Chalcogen bond">Chalcogen</a></li> <li><a href="/wiki/Metallophilic_interaction" title="Metallophilic interaction">Metallophilic</a> (<a href="/wiki/Aurophilicity" title="Aurophilicity">aurophilic</a>)</li> <li><a href="/wiki/Intercalation_(chemistry)" title="Intercalation (chemistry)">Intercalation</a></li> <li><a href="/wiki/Stacking_(chemistry)" title="Stacking (chemistry)">Stacking</a></li> <li><a href="/wiki/Cation%E2%80%93pi_interaction" class="mw-redirect" title="Cation–pi interaction">Cation–pi</a></li> <li><a href="/wiki/Cation%E2%80%93pi_interaction#Anion–π_interaction" class="mw-redirect" title="Cation–pi interaction">Anion–pi</a></li> <li><a href="/wiki/Salt_bridge_(protein_and_supramolecular)" title="Salt bridge (protein and supramolecular)">Salt bridge</a></li></ul> </div></td></tr></tbody></table><div></div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Bond_cleavage" title="Bond cleavage">Bond cleavage</a></th><td class="navbox-list-with-group navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Heterolysis_(chemistry)" title="Heterolysis (chemistry)">Heterolysis</a></li> <li><a href="/wiki/Homolysis_(chemistry)" title="Homolysis (chemistry)">Homolysis</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Electron_counting" title="Electron counting">Electron counting</a> rules</th><td class="navbox-list-with-group navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Aromaticity</a> <ul><li><a href="/wiki/H%C3%BCckel%27s_rule" title="Hückel's rule">Hückel's rule</a></li> <li><a href="/wiki/Baird%27s_rule" title="Baird's rule">Baird's rule</a></li> <li><a href="/wiki/M%C3%B6bius_aromaticity" title="Möbius aromaticity">Möbius</a></li> <li><a href="/wiki/Spherical_aromaticity" title="Spherical aromaticity">spherical</a></li></ul></li> <li><a href="/wiki/Polyhedral_skeletal_electron_pair_theory" title="Polyhedral skeletal electron pair theory">Polyhedral skeletal electron pair theory</a></li> <li><a href="/wiki/Jemmis_mno_rules" title="Jemmis mno rules">Jemmis mno rules</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Concepts_in_organic_chemistry" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Organic_chemistry" title="Template:Organic chemistry"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Organic_chemistry" title="Template talk:Organic chemistry"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Organic_chemistry" title="Special:EditPage/Template:Organic chemistry"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Concepts_in_organic_chemistry" style="font-size:114%;margin:0 4em">Concepts in <a href="/wiki/Organic_chemistry" title="Organic chemistry">organic chemistry</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a class="mw-selflink selflink">Aromaticity</a></li> <li><a href="/wiki/Covalent_bond" title="Covalent bond">Covalent bonding</a></li> <li><a href="/wiki/Functional_group" title="Functional group">Functional groups</a></li> <li><a href="/wiki/IUPAC_nomenclature_of_organic_chemistry" title="IUPAC nomenclature of organic chemistry">Nomenclature</a></li> <li><a href="/wiki/Organic_compound" title="Organic compound">Organic compounds</a></li> <li><a href="/wiki/Organic_reaction" title="Organic reaction">Organic reactions</a></li> <li><a href="/wiki/Organic_synthesis" title="Organic synthesis">Organic synthesis</a></li> <li><a href="/wiki/List_of_important_publications_in_chemistry#Organic_chemistry" title="List of important publications in chemistry">Publications</a></li> <li><a href="/wiki/Spectroscopy" title="Spectroscopy">Spectroscopy</a></li> <li><a href="/wiki/Stereochemistry" title="Stereochemistry">Stereochemistry</a></li> <li><a href="/wiki/List_of_organic_compounds" class="mw-redirect" title="List of organic compounds">List of organic compounds</a></li></ul> </div></td></tr></tbody></table></div> <div class="navbox-styles"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1236075235"></div><div role="navigation" class="navbox" aria-labelledby="Topics_in_organic_reactions" style="padding:3px"><table class="nowraplinks mw-collapsible autocollapse navbox-inner" style="border-spacing:0;background:transparent;color:inherit"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1129693374"><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1239400231"><div class="navbar plainlinks hlist navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Organic_reactions" title="Template:Organic reactions"><abbr title="View this template">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Organic_reactions" title="Template talk:Organic reactions"><abbr title="Discuss this template">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Organic_reactions" title="Special:EditPage/Template:Organic reactions"><abbr title="Edit this template">e</abbr></a></li></ul></div><div id="Topics_in_organic_reactions" style="font-size:114%;margin:0 4em">Topics in <a href="/wiki/Organic_reaction" title="Organic reaction">organic reactions</a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Addition_reaction" title="Addition reaction">Addition reaction</a></li> <li><a href="/wiki/Elimination_reaction" title="Elimination reaction">Elimination reaction</a></li> <li><a href="/wiki/Polymerization" title="Polymerization">Polymerization</a></li> <li><a href="/wiki/Category:Reagents_for_organic_chemistry" title="Category:Reagents for organic chemistry">Reagents</a></li> <li><a href="/wiki/Rearrangement_reaction" title="Rearrangement reaction">Rearrangement reaction</a></li> <li><a href="/wiki/Organic_redox_reaction" title="Organic redox reaction">Redox reaction</a></li> <li><a href="/wiki/Regioselectivity" title="Regioselectivity">Regioselectivity</a></li> <li><a href="/wiki/Stereoselectivity" title="Stereoselectivity">Stereoselectivity</a></li> <li><a href="/wiki/Stereospecificity" title="Stereospecificity">Stereospecificity</a></li> <li><a href="/wiki/Substitution_reaction" title="Substitution reaction">Substitution reaction</a></li></ul> </div></td></tr><tr><td colspan="2" class="navbox-list navbox-even hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/A_value" title="A value">A value</a></li> <li><a href="/wiki/Alpha_effect" title="Alpha effect">Alpha effect</a></li> <li><a href="/wiki/Annulene" title="Annulene">Annulene</a></li> <li><a href="/wiki/Anomeric_effect" title="Anomeric effect">Anomeric effect</a></li> <li><a href="/wiki/Antiaromaticity" title="Antiaromaticity">Antiaromaticity</a></li> <li><a href="/wiki/Aromatic_ring_current" title="Aromatic ring current">Aromatic ring current</a></li> <li><a class="mw-selflink selflink">Aromaticity</a></li> <li><a href="/wiki/Baird%27s_rule" title="Baird's rule">Baird's rule</a></li> <li><a href="/wiki/Baker%E2%80%93Nathan_effect" title="Baker–Nathan effect">Baker–Nathan effect</a></li> <li><a href="/wiki/Baldwin%27s_rules" title="Baldwin's rules">Baldwin's rules</a></li> <li><a href="/wiki/Bema_Hapothle" title="Bema Hapothle">Bema Hapothle</a></li> <li><a href="/wiki/Beta-silicon_effect" class="mw-redirect" title="Beta-silicon effect">Beta-silicon effect</a></li> <li><a href="/wiki/Bicycloaromaticity" title="Bicycloaromaticity">Bicycloaromaticity</a></li> <li><a href="/wiki/Bredt%27s_rule" title="Bredt's rule">Bredt's rule</a></li> <li><a href="/wiki/B%C3%BCrgi%E2%80%93Dunitz_angle" title="Bürgi–Dunitz angle">Bürgi–Dunitz angle</a></li> <li><a href="/wiki/Catalytic_resonance_theory" title="Catalytic resonance theory">Catalytic resonance theory</a></li> <li><a href="/wiki/Charge_remote_fragmentation" class="mw-redirect" title="Charge remote fragmentation">Charge remote fragmentation</a></li> <li><a href="/wiki/Charge-transfer_complex" title="Charge-transfer complex">Charge-transfer complex</a></li> <li><a href="/wiki/Clar%27s_rule" title="Clar's rule">Clar's rule</a></li> <li><a href="/wiki/Conformational_isomerism" title="Conformational isomerism">Conformational isomerism</a></li> <li><a href="/wiki/Conjugated_system" title="Conjugated system">Conjugated system</a></li> <li><a href="/wiki/Conrotatory_and_disrotatory" title="Conrotatory and disrotatory">Conrotatory and disrotatory</a></li> <li><a href="/wiki/Curtin%E2%80%93Hammett_principle" title="Curtin–Hammett principle">Curtin–Hammett principle</a></li> <li><a href="/wiki/Dynamic_binding_(chemistry)" title="Dynamic binding (chemistry)">Dynamic binding (chemistry)</a></li> <li><a href="/wiki/Edwards_equation" title="Edwards equation">Edwards equation</a></li> <li><a href="/wiki/Effective_molarity" title="Effective molarity">Effective molarity</a></li> <li><a href="/wiki/Electromeric_effect" title="Electromeric effect">Electromeric effect</a></li> <li><a href="/wiki/Electron-rich" title="Electron-rich">Electron-rich</a></li> <li><a href="/wiki/Electron-withdrawing_group" title="Electron-withdrawing group">Electron-withdrawing group</a></li> <li><a href="/wiki/Electronic_effect" title="Electronic effect">Electronic effect</a></li> <li><a href="/wiki/Electrophile" title="Electrophile">Electrophile</a></li> <li><a href="/wiki/Evelyn_effect" title="Evelyn effect">Evelyn effect</a></li> <li><a href="/wiki/Flippin%E2%80%93Lodge_angle" title="Flippin–Lodge angle">Flippin–Lodge angle</a></li> <li><a href="/wiki/Free-energy_relationship" title="Free-energy relationship">Free-energy relationship</a></li> <li><a href="/wiki/Grunwald%E2%80%93Winstein_equation" title="Grunwald–Winstein equation">Grunwald–Winstein equation</a></li> <li><a href="/wiki/Hammett_acidity_function" title="Hammett acidity function">Hammett acidity function</a></li> <li><a href="/wiki/Hammett_equation" title="Hammett equation">Hammett equation</a></li> <li><a href="/wiki/George_S._Hammond" title="George S. Hammond">George S. Hammond</a></li> <li><a href="/wiki/Hammond%27s_postulate" title="Hammond's postulate">Hammond's postulate</a></li> <li><a href="/wiki/Homoaromaticity" title="Homoaromaticity">Homoaromaticity</a></li> <li><a href="/wiki/H%C3%BCckel%27s_rule" title="Hückel's rule">Hückel's rule</a></li> <li><a href="/wiki/Hyperconjugation" title="Hyperconjugation">Hyperconjugation</a></li> <li><a href="/wiki/Inductive_effect" title="Inductive effect">Inductive effect</a></li> <li><a href="/wiki/Kinetic_isotope_effect" title="Kinetic isotope effect">Kinetic isotope effect</a></li> <li><a href="/wiki/LFER_solvent_coefficients_(data_page)" title="LFER solvent coefficients (data page)">LFER solvent coefficients (data page)</a></li> <li><a href="/wiki/Marcus_theory" title="Marcus theory">Marcus theory</a></li> <li><a href="/wiki/Markovnikov%27s_rule" title="Markovnikov's rule">Markovnikov's rule</a></li> <li><a href="/wiki/M%C3%B6bius_aromaticity" title="Möbius aromaticity">Möbius aromaticity</a></li> <li><a href="/wiki/M%C3%B6bius%E2%80%93H%C3%BCckel_concept" title="Möbius–Hückel concept">Möbius–Hückel concept</a></li> <li><a href="/wiki/More_O%27Ferrall%E2%80%93Jencks_plot" title="More O'Ferrall–Jencks plot">More O'Ferrall–Jencks plot</a></li> <li><a href="/wiki/Negative_hyperconjugation" title="Negative hyperconjugation">Negative hyperconjugation</a></li> <li><a href="/wiki/Neighbouring_group_participation" title="Neighbouring group participation">Neighbouring group participation</a></li> <li><a href="/wiki/2-Norbornyl_cation" title="2-Norbornyl cation">2-Norbornyl cation</a></li> <li><a href="/wiki/Nucleophile" title="Nucleophile">Nucleophile</a></li> <li><a href="/wiki/Kennedy_J._P._Orton" title="Kennedy J. P. Orton">Kennedy J. P. Orton</a></li> <li><a href="/wiki/Passive_binding" title="Passive binding">Passive binding</a></li> <li><a href="/wiki/Phosphaethynolate" title="Phosphaethynolate">Phosphaethynolate</a></li> <li><a href="/wiki/Polar_effect" class="mw-redirect" title="Polar effect">Polar effect</a></li> <li><a href="/wiki/Polyfluorene" title="Polyfluorene">Polyfluorene</a></li> <li><a href="/wiki/Ring_strain" title="Ring strain">Ring strain</a></li> <li><a href="/wiki/%CE%A3-aromaticity" class="mw-redirect" title="Σ-aromaticity">Σ-aromaticity</a></li> <li><a href="/wiki/Spherical_aromaticity" title="Spherical aromaticity">Spherical aromaticity</a></li> <li><a href="/wiki/Spiroaromaticity" class="mw-redirect" title="Spiroaromaticity">Spiroaromaticity</a></li> <li><a href="/wiki/Steric_effects" title="Steric effects">Steric effects</a></li> <li><a href="/wiki/Superaromaticity" class="mw-redirect" title="Superaromaticity">Superaromaticity</a></li> <li><a href="/wiki/Swain%E2%80%93Lupton_equation" title="Swain–Lupton equation">Swain–Lupton equation</a></li> <li><a href="/wiki/Taft_equation" title="Taft equation">Taft equation</a></li> <li><a href="/wiki/Thorpe%E2%80%93Ingold_effect" title="Thorpe–Ingold effect">Thorpe–Ingold effect</a></li> <li><a href="/wiki/Vinylogy" title="Vinylogy">Vinylogy</a></li> <li><a href="/wiki/Walsh_diagram" title="Walsh diagram">Walsh diagram</a></li> <li><a href="/wiki/Woodward%E2%80%93Hoffmann_rules" title="Woodward–Hoffmann rules">Woodward–Hoffmann rules</a></li> <li><a href="/wiki/Woodward%27s_rules" title="Woodward's rules">Woodward's rules</a></li> <li><a href="/wiki/Y-aromaticity" class="mw-redirect" title="Y-aromaticity">Y-aromaticity</a></li> <li><a href="/wiki/Yukawa%E2%80%93Tsuno_equation" title="Yukawa–Tsuno equation">Yukawa–Tsuno equation</a></li> <li><a href="/wiki/Zaitsev%27s_rule" class="mw-redirect" title="Zaitsev's rule">Zaitsev's rule</a></li> <li><a href="/wiki/%CE%A3-bishomoaromaticity" class="mw-redirect" title="Σ-bishomoaromaticity">Σ-bishomoaromaticity</a></li></ul> </div><table class="nowraplinks mw-collapsible autocollapse navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="col" class="navbox-title" colspan="2"><div id="List_of_organic_reactions" style="font-size:114%;margin:0 4em"><a href="/wiki/List_of_organic_reactions" title="List of organic reactions">List of organic reactions</a></div></th></tr><tr><th scope="row" class="navbox-group" style="width:7.5em">Carbon-carbon <br /> bond forming <br /> reactions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acetoacetic_ester_synthesis" title="Acetoacetic ester synthesis">Acetoacetic ester synthesis</a></li> <li><a href="/wiki/Acyloin_condensation" title="Acyloin condensation">Acyloin condensation</a></li> <li><a href="/wiki/Aldol_condensation" title="Aldol condensation">Aldol condensation</a></li> <li><a href="/wiki/Aldol_reaction" title="Aldol reaction">Aldol reaction</a></li> <li><a href="/wiki/Alkane_metathesis" title="Alkane metathesis">Alkane metathesis</a></li> <li><a href="/wiki/Alkyne_metathesis" title="Alkyne metathesis">Alkyne metathesis</a></li> <li><a href="/wiki/Alkyne_trimerisation" title="Alkyne trimerisation">Alkyne trimerisation</a></li> <li><a href="/wiki/Alkynylation" title="Alkynylation">Alkynylation</a></li> <li><a href="/wiki/Allan%E2%80%93Robinson_reaction" title="Allan–Robinson reaction">Allan–Robinson reaction</a></li> <li><a href="/wiki/Arndt%E2%80%93Eistert_reaction" title="Arndt–Eistert reaction">Arndt–Eistert reaction</a></li> <li><a href="/wiki/Auwers_synthesis" title="Auwers synthesis">Auwers synthesis</a></li> <li><a href="/wiki/Aza-Baylis%E2%80%93Hillman_reaction" title="Aza-Baylis–Hillman reaction">Aza-Baylis–Hillman reaction</a></li> <li><a href="/wiki/Barbier_reaction" title="Barbier reaction">Barbier reaction</a></li> <li><a href="/wiki/Barton%E2%80%93Kellogg_reaction" title="Barton–Kellogg reaction">Barton–Kellogg reaction</a></li> <li><a href="/wiki/Baylis%E2%80%93Hillman_reaction" title="Baylis–Hillman reaction">Baylis–Hillman reaction</a></li> <li><a href="/wiki/Benary_reaction" title="Benary reaction">Benary reaction</a></li> <li><a href="/wiki/Bergman_cyclization" title="Bergman cyclization">Bergman cyclization</a></li> <li><a href="/wiki/Biginelli_reaction" title="Biginelli reaction">Biginelli reaction</a></li> <li><a href="/wiki/Bingel_reaction" title="Bingel reaction">Bingel reaction</a></li> <li><a href="/wiki/Blaise_ketone_synthesis" title="Blaise ketone synthesis">Blaise ketone synthesis</a></li> <li><a href="/wiki/Blaise_reaction" title="Blaise reaction">Blaise reaction</a></li> <li><a href="/wiki/Blanc_chloromethylation" title="Blanc chloromethylation">Blanc chloromethylation</a></li> <li><a href="/wiki/Bodroux%E2%80%93Chichibabin_aldehyde_synthesis" title="Bodroux–Chichibabin aldehyde synthesis">Bodroux–Chichibabin aldehyde synthesis</a></li> <li><a href="/wiki/Bouveault_aldehyde_synthesis" title="Bouveault aldehyde synthesis">Bouveault aldehyde synthesis</a></li> <li><a href="/wiki/Bucherer%E2%80%93Bergs_reaction" title="Bucherer–Bergs reaction">Bucherer–Bergs reaction</a></li> <li><a href="/wiki/Buchner_ring_expansion" title="Buchner ring expansion">Buchner ring expansion</a></li> <li><a href="/wiki/Cadiot%E2%80%93Chodkiewicz_coupling" title="Cadiot–Chodkiewicz coupling">Cadiot–Chodkiewicz coupling</a></li> <li><a href="/wiki/Carbonyl_allylation" title="Carbonyl allylation">Carbonyl allylation</a></li> <li><a href="/wiki/Carbonyl_olefin_metathesis" title="Carbonyl olefin metathesis">Carbonyl olefin metathesis</a></li> <li><a href="/wiki/Castro%E2%80%93Stephens_coupling" title="Castro–Stephens coupling">Castro–Stephens coupling</a></li> <li><a href="/wiki/Chan_rearrangement" title="Chan rearrangement">Chan rearrangement</a></li> <li><a href="/wiki/Chan%E2%80%93Lam_coupling" title="Chan–Lam coupling">Chan–Lam coupling</a></li> <li><a href="/wiki/Claisen_condensation" title="Claisen condensation">Claisen condensation</a></li> <li><a href="/wiki/Claisen_rearrangement" title="Claisen rearrangement">Claisen rearrangement</a></li> <li><a href="/wiki/Claisen-Schmidt_condensation" class="mw-redirect" title="Claisen-Schmidt condensation">Claisen-Schmidt condensation</a></li> <li><a href="/wiki/Combes_quinoline_synthesis" title="Combes quinoline synthesis">Combes quinoline synthesis</a></li> <li><a href="/wiki/Corey%E2%80%93Fuchs_reaction" title="Corey–Fuchs reaction">Corey–Fuchs reaction</a></li> <li><a href="/wiki/Corey%E2%80%93House_synthesis" title="Corey–House synthesis">Corey–House synthesis</a></li> <li><a href="/wiki/Coupling_reaction" title="Coupling reaction">Coupling reaction</a></li> <li><a href="/wiki/Cross-coupling_reaction" title="Cross-coupling reaction">Cross-coupling reaction</a></li> <li><a href="/wiki/Cross_dehydrogenative_coupling" title="Cross dehydrogenative coupling">Cross dehydrogenative coupling</a></li> <li><a href="/wiki/Cross-coupling_partner" title="Cross-coupling partner">Cross-coupling partner</a></li> <li><a href="/wiki/Dakin%E2%80%93West_reaction" title="Dakin–West reaction">Dakin–West reaction</a></li> <li><a href="/wiki/Darzens_reaction" title="Darzens reaction">Darzens reaction</a></li> <li><a href="/wiki/Diels%E2%80%93Alder_reaction" title="Diels–Alder reaction">Diels–Alder reaction</a></li> <li><a href="/wiki/Doebner_reaction" title="Doebner reaction">Doebner reaction</a></li> <li><a href="/wiki/Wulff%E2%80%93D%C3%B6tz_reaction" title="Wulff–Dötz reaction">Wulff–Dötz reaction</a></li> <li><a href="/wiki/Ene_reaction" title="Ene reaction">Ene reaction</a></li> <li><a href="/wiki/Enyne_metathesis" title="Enyne metathesis">Enyne metathesis</a></li> <li><a href="/wiki/Ethenolysis" title="Ethenolysis">Ethenolysis</a></li> <li><a href="/wiki/Favorskii_reaction" title="Favorskii reaction">Favorskii reaction</a></li> <li><a href="/wiki/Ferrier_carbocyclization" title="Ferrier carbocyclization">Ferrier carbocyclization</a></li> <li><a href="/wiki/Friedel%E2%80%93Crafts_reaction" title="Friedel–Crafts reaction">Friedel–Crafts reaction</a></li> <li><a href="/wiki/Fujimoto%E2%80%93Belleau_reaction" title="Fujimoto–Belleau reaction">Fujimoto–Belleau reaction</a></li> <li><a href="/wiki/Fujiwara%E2%80%93Moritani_reaction" title="Fujiwara–Moritani reaction">Fujiwara–Moritani reaction</a></li> <li><a href="/wiki/Fukuyama_coupling" title="Fukuyama coupling">Fukuyama coupling</a></li> <li><a href="/wiki/Gabriel%E2%80%93Colman_rearrangement" title="Gabriel–Colman rearrangement">Gabriel–Colman rearrangement</a></li> <li><a href="/wiki/Gattermann_reaction" title="Gattermann reaction">Gattermann reaction</a></li> <li><a href="/wiki/Glaser_coupling" title="Glaser coupling">Glaser coupling</a></li> <li><a href="/wiki/Grignard_reaction" title="Grignard reaction">Grignard reaction</a></li> <li><a href="/wiki/Grignard_reagent" title="Grignard reagent">Grignard reagent</a></li> <li><a href="/wiki/Hammick_reaction" title="Hammick reaction">Hammick reaction</a></li> <li><a href="/wiki/Heck_reaction" title="Heck reaction">Heck reaction</a></li> <li><a href="/wiki/Henry_reaction" title="Henry reaction">Henry reaction</a></li> <li><a href="/wiki/Heterogeneous_metal_catalyzed_cross-coupling" title="Heterogeneous metal catalyzed cross-coupling">Heterogeneous metal catalyzed cross-coupling</a></li> <li><a href="/wiki/High_dilution_principle" title="High dilution principle">High dilution principle</a></li> <li><a href="/wiki/Hiyama_coupling" title="Hiyama coupling">Hiyama coupling</a></li> <li><a href="/wiki/Homologation_reaction" title="Homologation reaction">Homologation reaction</a></li> <li><a href="/wiki/Horner%E2%80%93Wadsworth%E2%80%93Emmons_reaction" title="Horner–Wadsworth–Emmons reaction">Horner–Wadsworth–Emmons reaction</a></li> <li><a href="/wiki/Hydrocyanation" title="Hydrocyanation">Hydrocyanation</a></li> <li><a href="/wiki/Hydrovinylation" title="Hydrovinylation">Hydrovinylation</a></li> <li><a href="/wiki/Hydroxymethylation" title="Hydroxymethylation">Hydroxymethylation</a></li> <li><a href="/wiki/Ivanov_reaction" title="Ivanov reaction">Ivanov reaction</a></li> <li><a href="/wiki/Johnson%E2%80%93Corey%E2%80%93Chaykovsky_reaction" title="Johnson–Corey–Chaykovsky reaction">Johnson–Corey–Chaykovsky reaction</a></li> <li><a href="/wiki/Julia_olefination" title="Julia olefination">Julia olefination</a></li> <li><a href="/wiki/Julia%E2%80%93Kocienski_olefination" class="mw-redirect" title="Julia–Kocienski olefination">Julia–Kocienski olefination</a></li> <li><a href="/wiki/Kauffmann_olefination" title="Kauffmann olefination">Kauffmann olefination</a></li> <li><a href="/wiki/Knoevenagel_condensation" title="Knoevenagel condensation">Knoevenagel condensation</a></li> <li><a href="/wiki/Knorr_pyrrole_synthesis" title="Knorr pyrrole synthesis">Knorr pyrrole synthesis</a></li> <li><a href="/wiki/Kolbe%E2%80%93Schmitt_reaction" title="Kolbe–Schmitt reaction">Kolbe–Schmitt reaction</a></li> <li><a href="/wiki/Kowalski_ester_homologation" title="Kowalski ester homologation">Kowalski ester homologation</a></li> <li><a href="/wiki/Kulinkovich_reaction" title="Kulinkovich reaction">Kulinkovich reaction</a></li> <li><a href="/wiki/Kumada_coupling" title="Kumada coupling">Kumada coupling</a></li> <li><a href="/wiki/Liebeskind%E2%80%93Srogl_coupling" title="Liebeskind–Srogl coupling">Liebeskind–Srogl coupling</a></li> <li><a href="/wiki/Malonic_ester_synthesis" title="Malonic ester synthesis">Malonic ester synthesis</a></li> <li><a href="/wiki/Mannich_reaction" title="Mannich reaction">Mannich reaction</a></li> <li><a href="/wiki/McMurry_reaction" title="McMurry reaction">McMurry reaction</a></li> <li><a href="/wiki/Meerwein_arylation" title="Meerwein arylation">Meerwein arylation</a></li> <li><a href="/wiki/Methylenation" title="Methylenation">Methylenation</a></li> <li><a href="/wiki/Michael_reaction" class="mw-redirect" title="Michael reaction">Michael reaction</a></li> <li><a href="/wiki/Minisci_reaction" title="Minisci reaction">Minisci reaction</a></li> <li><a href="/w/index.php?title=Mizoroki-Heck_vs._Reductive_Heck&action=edit&redlink=1" class="new" title="Mizoroki-Heck vs. Reductive Heck (page does not exist)">Mizoroki-Heck vs. Reductive Heck</a></li> <li><a href="/wiki/Nef_isocyanide_reaction" title="Nef isocyanide reaction">Nef isocyanide reaction</a></li> <li><a href="/wiki/Nef_synthesis" title="Nef synthesis">Nef synthesis</a></li> <li><a href="/wiki/Negishi_coupling" title="Negishi coupling">Negishi coupling</a></li> <li><a href="/wiki/Nierenstein_reaction" title="Nierenstein reaction">Nierenstein reaction</a></li> <li><a href="/wiki/Nitro-Mannich_reaction" title="Nitro-Mannich reaction">Nitro-Mannich reaction</a></li> <li><a href="/wiki/Nozaki%E2%80%93Hiyama%E2%80%93Kishi_reaction" title="Nozaki–Hiyama–Kishi reaction">Nozaki–Hiyama–Kishi reaction</a></li> <li><a href="/wiki/Olefin_conversion_technology" title="Olefin conversion technology">Olefin conversion technology</a></li> <li><a href="/wiki/Olefin_metathesis" title="Olefin metathesis">Olefin metathesis</a></li> <li><a href="/wiki/Palladium%E2%80%93NHC_complex" title="Palladium–NHC complex">Palladium–NHC complex</a></li> <li><a href="/wiki/Passerini_reaction" title="Passerini reaction">Passerini reaction</a></li> <li><a href="/wiki/Peterson_olefination" title="Peterson olefination">Peterson olefination</a></li> <li><a href="/wiki/Pfitzinger_reaction" title="Pfitzinger reaction">Pfitzinger reaction</a></li> <li><a href="/wiki/Piancatelli_rearrangement" title="Piancatelli rearrangement">Piancatelli rearrangement</a></li> <li><a href="/wiki/Pinacol_coupling_reaction" title="Pinacol coupling reaction">Pinacol coupling reaction</a></li> <li><a href="/wiki/Prins_reaction" title="Prins reaction">Prins reaction</a></li> <li><a href="/wiki/Quelet_reaction" title="Quelet reaction">Quelet reaction</a></li> <li><a href="/wiki/Ramberg%E2%80%93B%C3%A4cklund_reaction" title="Ramberg–Bäcklund reaction">Ramberg–Bäcklund reaction</a></li> <li><a href="/wiki/Rauhut%E2%80%93Currier_reaction" title="Rauhut–Currier reaction">Rauhut–Currier reaction</a></li> <li><a href="/wiki/Reformatsky_reaction" title="Reformatsky reaction">Reformatsky reaction</a></li> <li><a href="/wiki/Reimer%E2%80%93Tiemann_reaction" title="Reimer–Tiemann reaction">Reimer–Tiemann reaction</a></li> <li><a href="/wiki/Rieche_formylation" title="Rieche formylation">Rieche formylation</a></li> <li><a href="/wiki/Ring-closing_metathesis" title="Ring-closing metathesis">Ring-closing metathesis</a></li> <li><a href="/wiki/Robinson_annulation" title="Robinson annulation">Robinson annulation</a></li> <li><a href="/wiki/Sakurai_reaction" title="Sakurai reaction">Sakurai reaction</a></li> <li><a href="/wiki/Seyferth%E2%80%93Gilbert_homologation" title="Seyferth–Gilbert homologation">Seyferth–Gilbert homologation</a></li> <li><a href="/wiki/Shapiro_reaction" title="Shapiro reaction">Shapiro reaction</a></li> <li><a href="/wiki/Sonogashira_coupling" title="Sonogashira coupling">Sonogashira coupling</a></li> <li><a href="/wiki/Stetter_reaction" title="Stetter reaction">Stetter reaction</a></li> <li><a href="/wiki/Stille_reaction" title="Stille reaction">Stille reaction</a></li> <li><a href="/wiki/Stoll%C3%A9_synthesis" title="Stollé synthesis">Stollé synthesis</a></li> <li><a href="/wiki/Stork_enamine_alkylation" title="Stork enamine alkylation">Stork enamine alkylation</a></li> <li><a href="/wiki/Suzuki_reaction" title="Suzuki reaction">Suzuki reaction</a></li> <li><a href="/wiki/Takai_olefination" title="Takai olefination">Takai olefination</a></li> <li><a href="/wiki/Thermal_rearrangement_of_aromatic_hydrocarbons" title="Thermal rearrangement of aromatic hydrocarbons">Thermal rearrangement of aromatic hydrocarbons</a></li> <li><a href="/wiki/Thorpe_reaction" title="Thorpe reaction">Thorpe reaction</a></li> <li><a href="/wiki/Ugi_reaction" title="Ugi reaction">Ugi reaction</a></li> <li><a href="/wiki/Ullmann_reaction" title="Ullmann reaction">Ullmann reaction</a></li> <li><a href="/wiki/Wagner-Jauregg_reaction" title="Wagner-Jauregg reaction">Wagner-Jauregg reaction</a></li> <li><a href="/wiki/Weinreb_ketone_synthesis" title="Weinreb ketone synthesis">Weinreb ketone synthesis</a></li> <li><a href="/wiki/Wittig_reaction" title="Wittig reaction">Wittig reaction</a></li> <li><a href="/wiki/Wurtz_reaction" title="Wurtz reaction">Wurtz reaction</a></li> <li><a href="/wiki/Wurtz%E2%80%93Fittig_reaction" title="Wurtz–Fittig reaction">Wurtz–Fittig reaction</a></li> <li><a href="/wiki/Zincke%E2%80%93Suhl_reaction" title="Zincke–Suhl reaction">Zincke–Suhl reaction</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Homologation_reactions" class="mw-redirect" title="Homologation reactions">Homologation reactions</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Arndt%E2%80%93Eistert_reaction" title="Arndt–Eistert reaction">Arndt–Eistert reaction</a></li> <li><a href="/wiki/Hooker_reaction" title="Hooker reaction">Hooker reaction</a></li> <li><a href="/wiki/Kiliani%E2%80%93Fischer_synthesis" title="Kiliani–Fischer synthesis">Kiliani–Fischer synthesis</a></li> <li><a href="/wiki/Kowalski_ester_homologation" title="Kowalski ester homologation">Kowalski ester homologation</a></li> <li><a href="/wiki/Methoxymethylenetriphenylphosphorane" title="Methoxymethylenetriphenylphosphorane">Methoxymethylenetriphenylphosphorane</a></li> <li><a href="/wiki/Seyferth%E2%80%93Gilbert_homologation" title="Seyferth–Gilbert homologation">Seyferth–Gilbert homologation</a></li> <li><a href="/wiki/Wittig_reaction" title="Wittig reaction">Wittig reaction</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Olefination reactions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Bamford%E2%80%93Stevens_reaction" title="Bamford–Stevens reaction">Bamford–Stevens reaction</a></li> <li><a href="/wiki/Barton%E2%80%93Kellogg_reaction" title="Barton–Kellogg reaction">Barton–Kellogg reaction</a></li> <li><a href="/wiki/Boord_olefin_synthesis" title="Boord olefin synthesis">Boord olefin synthesis</a></li> <li><a href="/wiki/Chugaev_elimination" title="Chugaev elimination">Chugaev elimination</a></li> <li><a href="/wiki/Cope_reaction" title="Cope reaction">Cope reaction</a></li> <li><a href="/wiki/Corey%E2%80%93Winter_olefin_synthesis" title="Corey–Winter olefin synthesis">Corey–Winter olefin synthesis</a></li> <li><a href="/wiki/Dehydrohalogenation" title="Dehydrohalogenation">Dehydrohalogenation</a></li> <li><a href="/wiki/Elimination_reaction" title="Elimination reaction">Elimination reaction</a></li> <li><a href="/wiki/Grieco_elimination" title="Grieco elimination">Grieco elimination</a></li> <li><a href="/wiki/Hofmann_elimination" title="Hofmann elimination">Hofmann elimination</a></li> <li><a href="/wiki/Horner%E2%80%93Wadsworth%E2%80%93Emmons_reaction" title="Horner–Wadsworth–Emmons reaction">Horner–Wadsworth–Emmons reaction</a></li> <li><a href="/wiki/Hydrazone_iodination" title="Hydrazone iodination">Hydrazone iodination</a></li> <li><a href="/wiki/Julia_olefination" title="Julia olefination">Julia olefination</a></li> <li><a href="/wiki/Julia%E2%80%93Kocienski_olefination" class="mw-redirect" title="Julia–Kocienski olefination">Julia–Kocienski olefination</a></li> <li><a href="/wiki/Kauffmann_olefination" title="Kauffmann olefination">Kauffmann olefination</a></li> <li><a href="/wiki/McMurry_reaction" title="McMurry reaction">McMurry reaction</a></li> <li><a href="/wiki/Peterson_olefination" title="Peterson olefination">Peterson olefination</a></li> <li><a href="/wiki/Ramberg%E2%80%93B%C3%A4cklund_reaction" title="Ramberg–Bäcklund reaction">Ramberg–Bäcklund reaction</a></li> <li><a href="/wiki/Shapiro_reaction" title="Shapiro reaction">Shapiro reaction</a></li> <li><a href="/wiki/Takai_olefination" title="Takai olefination">Takai olefination</a></li> <li><a href="/wiki/Wittig_reaction" title="Wittig reaction">Wittig reaction</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.5em">Carbon-heteroatom <br /> bond forming <br /> reactions</th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Azo_coupling" title="Azo coupling">Azo coupling</a></li> <li><a href="/wiki/Bartoli_indole_synthesis" title="Bartoli indole synthesis">Bartoli indole synthesis</a></li> <li><a href="/wiki/Boudouard_reaction" title="Boudouard reaction">Boudouard reaction</a></li> <li><a href="/wiki/Cadogan%E2%80%93Sundberg_indole_synthesis" title="Cadogan–Sundberg indole synthesis">Cadogan–Sundberg indole synthesis</a></li> <li><a href="/wiki/Diazonium_compound" title="Diazonium compound">Diazonium compound</a></li> <li><a href="/wiki/Esterification" class="mw-redirect" title="Esterification">Esterification</a></li> <li><a href="/wiki/Grignard_reagent" title="Grignard reagent">Grignard reagent</a></li> <li><a href="/wiki/Haloform_reaction" title="Haloform reaction">Haloform reaction</a></li> <li><a href="/wiki/Hegedus_indole_synthesis" title="Hegedus indole synthesis">Hegedus indole synthesis</a></li> <li><a href="/wiki/Hurd%E2%80%93Mori_1,2,3-thiadiazole_synthesis" title="Hurd–Mori 1,2,3-thiadiazole synthesis">Hurd–Mori 1,2,3-thiadiazole synthesis</a></li> <li><a href="/wiki/Kharasch%E2%80%93Sosnovsky_reaction" title="Kharasch–Sosnovsky reaction">Kharasch–Sosnovsky reaction</a></li> <li><a href="/wiki/Knorr_pyrrole_synthesis" title="Knorr pyrrole synthesis">Knorr pyrrole synthesis</a></li> <li><a href="/wiki/Leimgruber%E2%80%93Batcho_indole_synthesis" title="Leimgruber–Batcho indole synthesis">Leimgruber–Batcho indole synthesis</a></li> <li><a href="/wiki/Mukaiyama_hydration" title="Mukaiyama hydration">Mukaiyama hydration</a></li> <li><a href="/wiki/Nenitzescu_indole_synthesis" title="Nenitzescu indole synthesis">Nenitzescu indole synthesis</a></li> <li><a href="/wiki/Oxymercuration_reaction" title="Oxymercuration reaction">Oxymercuration reaction</a></li> <li><a href="/wiki/Reed_reaction" title="Reed reaction">Reed reaction</a></li> <li><a href="/wiki/Schotten%E2%80%93Baumann_reaction" title="Schotten–Baumann reaction">Schotten–Baumann reaction</a></li> <li><a href="/wiki/Ullmann_condensation" title="Ullmann condensation">Ullmann condensation</a></li> <li><a href="/wiki/Williamson_ether_synthesis" title="Williamson ether synthesis">Williamson ether synthesis</a></li> <li><a href="/wiki/Yamaguchi_esterification" title="Yamaguchi esterification">Yamaguchi esterification</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.5em">Degradation <br /> reactions</th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Barbier%E2%80%93Wieland_degradation" title="Barbier–Wieland degradation">Barbier–Wieland degradation</a></li> <li><a href="/wiki/Bergmann_degradation" title="Bergmann degradation">Bergmann degradation</a></li> <li><a href="/wiki/Edman_degradation" title="Edman degradation">Edman degradation</a></li> <li><a href="/wiki/Emde_degradation" title="Emde degradation">Emde degradation</a></li> <li><a href="/wiki/Gallagher%E2%80%93Hollander_degradation" title="Gallagher–Hollander degradation">Gallagher–Hollander degradation</a></li> <li><a href="/wiki/Hofmann_rearrangement" title="Hofmann rearrangement">Hofmann rearrangement</a></li> <li><a href="/wiki/Hooker_reaction" title="Hooker reaction">Hooker reaction</a></li> <li><a href="/wiki/Isosaccharinic_acid" title="Isosaccharinic acid">Isosaccharinic acid</a></li> <li><a href="/wiki/Marker_degradation" title="Marker degradation">Marker degradation</a></li> <li><a href="/wiki/Ruff_degradation" title="Ruff degradation">Ruff degradation</a></li> <li><a href="/wiki/Strecker_degradation" title="Strecker degradation">Strecker degradation</a></li> <li><a href="/wiki/Von_Braun_amide_degradation" title="Von Braun amide degradation">Von Braun amide degradation</a></li> <li><a href="/wiki/Weerman_degradation" title="Weerman degradation">Weerman degradation</a></li> <li><a href="/wiki/Wohl_degradation" title="Wohl degradation">Wohl degradation</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.5em"><a href="/wiki/Organic_redox_reaction" title="Organic redox reaction">Organic redox <br /> reactions</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Acyloin_condensation" title="Acyloin condensation">Acyloin condensation</a></li> <li><a href="/wiki/Adkins%E2%80%93Peterson_reaction" title="Adkins–Peterson reaction">Adkins–Peterson reaction</a></li> <li><a href="/wiki/Akabori_amino-acid_reaction" title="Akabori amino-acid reaction">Akabori amino-acid reaction</a></li> <li><a href="/wiki/Alcohol_oxidation" title="Alcohol oxidation">Alcohol oxidation</a></li> <li><a href="/wiki/Algar%E2%80%93Flynn%E2%80%93Oyamada_reaction" title="Algar–Flynn–Oyamada reaction">Algar–Flynn–Oyamada reaction</a></li> <li><a href="/wiki/Amide_reduction" title="Amide reduction">Amide reduction</a></li> <li><a href="/wiki/Andrussow_process" title="Andrussow process">Andrussow process</a></li> <li><a href="/wiki/Angeli%E2%80%93Rimini_reaction" title="Angeli–Rimini reaction">Angeli–Rimini reaction</a></li> <li><a href="/wiki/Aromatization" title="Aromatization">Aromatization</a></li> <li><a href="/wiki/Autoxidation" title="Autoxidation">Autoxidation</a></li> <li><a href="/wiki/Baeyer%E2%80%93Villiger_oxidation" title="Baeyer–Villiger oxidation">Baeyer–Villiger oxidation</a></li> <li><a href="/wiki/Barton%E2%80%93McCombie_deoxygenation" title="Barton–McCombie deoxygenation">Barton–McCombie deoxygenation</a></li> <li><a href="/wiki/Bechamp_reduction" class="mw-redirect" title="Bechamp reduction">Bechamp reduction</a></li> <li><a href="/wiki/Benkeser_reaction" class="mw-redirect" title="Benkeser reaction">Benkeser reaction</a></li> <li><a href="/wiki/Bergmann_degradation" title="Bergmann degradation">Bergmann degradation</a></li> <li><a href="/wiki/Birch_reduction" title="Birch reduction">Birch reduction</a></li> <li><a href="/wiki/Bohn%E2%80%93Schmidt_reaction" title="Bohn–Schmidt reaction">Bohn–Schmidt reaction</a></li> <li><a href="/wiki/Bosch_reaction" title="Bosch reaction">Bosch reaction</a></li> <li><a href="/wiki/Bouveault%E2%80%93Blanc_reduction" title="Bouveault–Blanc reduction">Bouveault–Blanc reduction</a></li> <li><a href="/wiki/Boyland%E2%80%93Sims_oxidation" title="Boyland–Sims oxidation">Boyland–Sims oxidation</a></li> <li><a href="/wiki/Cannizzaro_reaction" title="Cannizzaro reaction">Cannizzaro reaction</a></li> <li><a href="/wiki/Carbonyl_reduction" title="Carbonyl reduction">Carbonyl reduction</a></li> <li><a href="/wiki/Clemmensen_reduction" title="Clemmensen reduction">Clemmensen reduction</a></li> <li><a href="/wiki/Collins_oxidation" title="Collins oxidation">Collins oxidation</a></li> <li><a href="/wiki/Corey%E2%80%93Itsuno_reduction" title="Corey–Itsuno reduction">Corey–Itsuno reduction</a></li> <li><a href="/wiki/Corey%E2%80%93Kim_oxidation" title="Corey–Kim oxidation">Corey–Kim oxidation</a></li> <li><a href="/wiki/Corey%E2%80%93Winter_olefin_synthesis" title="Corey–Winter olefin synthesis">Corey–Winter olefin synthesis</a></li> <li><a href="/wiki/Criegee_oxidation" title="Criegee oxidation">Criegee oxidation</a></li> <li><a href="/wiki/Dakin_oxidation" title="Dakin oxidation">Dakin oxidation</a></li> <li><a href="/wiki/Davis_oxidation" title="Davis oxidation">Davis oxidation</a></li> <li><a href="/wiki/Deoxygenation" title="Deoxygenation">Deoxygenation</a></li> <li><a href="/wiki/Dess%E2%80%93Martin_oxidation" title="Dess–Martin oxidation">Dess–Martin oxidation</a></li> <li><a href="/wiki/DNA_oxidation" title="DNA oxidation">DNA oxidation</a></li> <li><a href="/wiki/Elbs_persulfate_oxidation" title="Elbs persulfate oxidation">Elbs persulfate oxidation</a></li> <li><a href="/wiki/Emde_degradation" title="Emde degradation">Emde degradation</a></li> <li><a href="/wiki/Eschweiler%E2%80%93Clarke_reaction" title="Eschweiler–Clarke reaction">Eschweiler–Clarke reaction</a></li> <li><a href="/wiki/%C3%89tard_reaction" title="Étard reaction">Étard reaction</a></li> <li><a href="/wiki/Fischer%E2%80%93Tropsch_process" title="Fischer–Tropsch process">Fischer–Tropsch process</a></li> <li><a href="/wiki/Fleming%E2%80%93Tamao_oxidation" title="Fleming–Tamao oxidation">Fleming–Tamao oxidation</a></li> <li><a href="/wiki/Fukuyama_reduction" title="Fukuyama reduction">Fukuyama reduction</a></li> <li><a href="/wiki/Ganem_oxidation" title="Ganem oxidation">Ganem oxidation</a></li> <li><a href="/wiki/Glycol_cleavage" title="Glycol cleavage">Glycol cleavage</a></li> <li><a href="/wiki/Griesbaum_coozonolysis" title="Griesbaum coozonolysis">Griesbaum coozonolysis</a></li> <li><a href="/wiki/Grundmann_aldehyde_synthesis" title="Grundmann aldehyde synthesis">Grundmann aldehyde synthesis</a></li> <li><a href="/wiki/Haloform_reaction" title="Haloform reaction">Haloform reaction</a></li> <li><a href="/wiki/Hydrogenation" title="Hydrogenation">Hydrogenation</a></li> <li><a href="/wiki/Hydrogenolysis" title="Hydrogenolysis">Hydrogenolysis</a></li> <li><a href="/wiki/Hydroxylation" title="Hydroxylation">Hydroxylation</a></li> <li><a href="/wiki/Jones_oxidation" title="Jones oxidation">Jones oxidation</a></li> <li><a href="/wiki/Kiliani%E2%80%93Fischer_synthesis" title="Kiliani–Fischer synthesis">Kiliani–Fischer synthesis</a></li> <li><a href="/wiki/Kolbe_electrolysis" title="Kolbe electrolysis">Kolbe electrolysis</a></li> <li><a href="/wiki/Kornblum_oxidation" title="Kornblum oxidation">Kornblum oxidation</a></li> <li><a href="/wiki/Kornblum%E2%80%93DeLaMare_rearrangement" title="Kornblum–DeLaMare rearrangement">Kornblum–DeLaMare rearrangement</a></li> <li><a href="/wiki/Leuckart_reaction" title="Leuckart reaction">Leuckart reaction</a></li> <li><a href="/wiki/Ley_oxidation" class="mw-redirect" title="Ley oxidation">Ley oxidation</a></li> <li><a href="/wiki/Lindgren_oxidation" title="Lindgren oxidation">Lindgren oxidation</a></li> <li><a href="/wiki/Lipid_peroxidation" title="Lipid peroxidation">Lipid peroxidation</a></li> <li><a href="/wiki/Lombardo_methylenation" title="Lombardo methylenation">Lombardo methylenation</a></li> <li><a href="/wiki/Luche_reduction" title="Luche reduction">Luche reduction</a></li> <li><a href="/wiki/Mark%C3%B3%E2%80%93Lam_deoxygenation" title="Markó–Lam deoxygenation">Markó–Lam deoxygenation</a></li> <li><a href="/wiki/McFadyen%E2%80%93Stevens_reaction" title="McFadyen–Stevens reaction">McFadyen–Stevens reaction</a></li> <li><a href="/wiki/Meerwein%E2%80%93Ponndorf%E2%80%93Verley_reduction" title="Meerwein–Ponndorf–Verley reduction">Meerwein–Ponndorf–Verley reduction</a></li> <li><a href="/wiki/Methionine_sulfoxide" title="Methionine sulfoxide">Methionine sulfoxide</a></li> <li><a href="/wiki/Miyaura_borylation" title="Miyaura borylation">Miyaura borylation</a></li> <li><a href="/wiki/Mozingo_reduction" title="Mozingo reduction">Mozingo reduction</a></li> <li><a href="/wiki/Noyori_asymmetric_hydrogenation" class="mw-redirect" title="Noyori asymmetric hydrogenation">Noyori asymmetric hydrogenation</a></li> <li><a href="/wiki/Omega_oxidation" title="Omega oxidation">Omega oxidation</a></li> <li><a href="/wiki/Oppenauer_oxidation" title="Oppenauer oxidation">Oppenauer oxidation</a></li> <li><a href="/wiki/Oxygen_rebound_mechanism" title="Oxygen rebound mechanism">Oxygen rebound mechanism</a></li> <li><a href="/wiki/Ozonolysis" title="Ozonolysis">Ozonolysis</a></li> <li><a href="/wiki/Parikh%E2%80%93Doering_oxidation" title="Parikh–Doering oxidation">Parikh–Doering oxidation</a></li> <li><a href="/wiki/Pinnick_oxidation" title="Pinnick oxidation">Pinnick oxidation</a></li> <li><a href="/wiki/Pr%C3%A9vost_reaction" title="Prévost reaction">Prévost reaction</a></li> <li><a href="/wiki/Reduction_of_nitro_compounds" title="Reduction of nitro compounds">Reduction of nitro compounds</a></li> <li><a href="/wiki/Reductive_amination" title="Reductive amination">Reductive amination</a></li> <li><a href="/wiki/Riley_oxidation" title="Riley oxidation">Riley oxidation</a></li> <li><a href="/wiki/Rosenmund_reduction" title="Rosenmund reduction">Rosenmund reduction</a></li> <li><a href="/wiki/Rubottom_oxidation" title="Rubottom oxidation">Rubottom oxidation</a></li> <li><a href="/wiki/Sabatier_reaction" title="Sabatier reaction">Sabatier reaction</a></li> <li><a href="/wiki/Sarett_oxidation" title="Sarett oxidation">Sarett oxidation</a></li> <li><a href="/wiki/Selenoxide_elimination" title="Selenoxide elimination">Selenoxide elimination</a></li> <li><a href="/wiki/Shapiro_reaction" title="Shapiro reaction">Shapiro reaction</a></li> <li><a href="/wiki/Sharpless_asymmetric_dihydroxylation" title="Sharpless asymmetric dihydroxylation">Sharpless asymmetric dihydroxylation</a></li> <li><a href="/wiki/Epoxidation_of_allylic_alcohols" title="Epoxidation of allylic alcohols">Epoxidation of allylic alcohols</a></li> <li><a href="/wiki/Sharpless_epoxidation" title="Sharpless epoxidation">Sharpless epoxidation</a></li> <li><a href="/wiki/Sharpless_oxyamination" title="Sharpless oxyamination">Sharpless oxyamination</a></li> <li><a href="/wiki/Stahl_oxidation" title="Stahl oxidation">Stahl oxidation</a></li> <li><a href="/wiki/Staudinger_reaction" title="Staudinger reaction">Staudinger reaction</a></li> <li><a href="/wiki/Stephen_aldehyde_synthesis" title="Stephen aldehyde synthesis">Stephen aldehyde synthesis</a></li> <li><a href="/wiki/Swern_oxidation" title="Swern oxidation">Swern oxidation</a></li> <li><a href="/wiki/Transfer_hydrogenation" title="Transfer hydrogenation">Transfer hydrogenation</a></li> <li><a href="/wiki/Wacker_process" title="Wacker process">Wacker process</a></li> <li><a href="/wiki/Wharton_reaction" title="Wharton reaction">Wharton reaction</a></li> <li><a href="/wiki/Whiting_reaction" title="Whiting reaction">Whiting reaction</a></li> <li><a href="/wiki/Wohl%E2%80%93Aue_reaction" title="Wohl–Aue reaction">Wohl–Aue reaction</a></li> <li><a href="/wiki/Wolff%E2%80%93Kishner_reduction" title="Wolff–Kishner reduction">Wolff–Kishner reduction</a></li> <li><a href="/wiki/Wolffenstein%E2%80%93B%C3%B6ters_reaction" title="Wolffenstein–Böters reaction">Wolffenstein–Böters reaction</a></li> <li><a href="/wiki/Zinin_reaction" title="Zinin reaction">Zinin reaction</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.5em"><a href="/wiki/Rearrangement_reaction" title="Rearrangement reaction">Rearrangement <br /> reactions</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1,2-rearrangement" title="1,2-rearrangement">1,2-rearrangement</a></li> <li><a href="/wiki/1,2-Wittig_rearrangement" title="1,2-Wittig rearrangement">1,2-Wittig rearrangement</a></li> <li><a href="/wiki/2,3-sigmatropic_rearrangement" title="2,3-sigmatropic rearrangement">2,3-sigmatropic rearrangement</a></li> <li><a href="/wiki/2,3-Wittig_rearrangement" title="2,3-Wittig rearrangement">2,3-Wittig rearrangement</a></li> <li><a href="/wiki/Achmatowicz_reaction" title="Achmatowicz reaction">Achmatowicz reaction</a></li> <li><a href="/wiki/Alkyne_zipper_reaction" title="Alkyne zipper reaction">Alkyne zipper reaction</a></li> <li><a href="/wiki/Allen%E2%80%93Millar%E2%80%93Trippett_rearrangement" title="Allen–Millar–Trippett rearrangement">Allen–Millar–Trippett rearrangement</a></li> <li><a href="/wiki/Allylic_rearrangement" title="Allylic rearrangement">Allylic rearrangement</a></li> <li><a href="/wiki/Alpha-ketol_rearrangement" class="mw-redirect" title="Alpha-ketol rearrangement">Alpha-ketol rearrangement</a></li> <li><a href="/wiki/Amadori_rearrangement" title="Amadori rearrangement">Amadori rearrangement</a></li> <li><a href="/wiki/Arndt%E2%80%93Eistert_reaction" title="Arndt–Eistert reaction">Arndt–Eistert reaction</a></li> <li><a href="/wiki/Aza-Cope_rearrangement" title="Aza-Cope rearrangement">Aza-Cope rearrangement</a></li> <li><a href="/wiki/Baker%E2%80%93Venkataraman_rearrangement" title="Baker–Venkataraman rearrangement">Baker–Venkataraman rearrangement</a></li> <li><a href="/wiki/Bamberger_rearrangement" title="Bamberger rearrangement">Bamberger rearrangement</a></li> <li><a href="/wiki/Banert_cascade" title="Banert cascade">Banert cascade</a></li> <li><a href="/wiki/Beckmann_rearrangement" title="Beckmann rearrangement">Beckmann rearrangement</a></li> <li><a href="/wiki/Benzilic_acid_rearrangement" title="Benzilic acid rearrangement">Benzilic acid rearrangement</a></li> <li><a href="/wiki/Bergman_cyclization" title="Bergman cyclization">Bergman cyclization</a></li> <li><a href="/wiki/Bergmann_degradation" title="Bergmann degradation">Bergmann degradation</a></li> <li><a href="/wiki/Boekelheide_reaction" title="Boekelheide reaction">Boekelheide reaction</a></li> <li><a href="/wiki/Brook_rearrangement" title="Brook rearrangement">Brook rearrangement</a></li> <li><a href="/wiki/Buchner_ring_expansion" title="Buchner ring expansion">Buchner ring expansion</a></li> <li><a href="/wiki/Carroll_rearrangement" title="Carroll rearrangement">Carroll rearrangement</a></li> <li><a href="/wiki/Chan_rearrangement" title="Chan rearrangement">Chan rearrangement</a></li> <li><a href="/wiki/Claisen_rearrangement" title="Claisen rearrangement">Claisen rearrangement</a></li> <li><a href="/wiki/Cope_rearrangement" title="Cope rearrangement">Cope rearrangement</a></li> <li><a href="/wiki/Corey%E2%80%93Fuchs_reaction" title="Corey–Fuchs reaction">Corey–Fuchs reaction</a></li> <li><a href="/wiki/Cornforth_rearrangement" title="Cornforth rearrangement">Cornforth rearrangement</a></li> <li><a href="/wiki/Criegee_rearrangement" title="Criegee rearrangement">Criegee rearrangement</a></li> <li><a href="/wiki/Curtius_rearrangement" title="Curtius rearrangement">Curtius rearrangement</a></li> <li><a href="/wiki/Demjanov_rearrangement" title="Demjanov rearrangement">Demjanov rearrangement</a></li> <li><a href="/wiki/Di-%CF%80-methane_rearrangement" title="Di-π-methane rearrangement">Di-π-methane rearrangement</a></li> <li><a href="/wiki/Dimroth_rearrangement" title="Dimroth rearrangement">Dimroth rearrangement</a></li> <li><a href="/wiki/Divinylcyclopropane-cycloheptadiene_rearrangement" title="Divinylcyclopropane-cycloheptadiene rearrangement">Divinylcyclopropane-cycloheptadiene rearrangement</a></li> <li><a href="/wiki/Dowd%E2%80%93Beckwith_ring-expansion_reaction" title="Dowd–Beckwith ring-expansion reaction">Dowd–Beckwith ring-expansion reaction</a></li> <li><a href="/wiki/Electrocyclic_reaction" title="Electrocyclic reaction">Electrocyclic reaction</a></li> <li><a href="/wiki/Ene_reaction" title="Ene reaction">Ene reaction</a></li> <li><a href="/wiki/Enyne_metathesis" title="Enyne metathesis">Enyne metathesis</a></li> <li><a href="/wiki/Favorskii_reaction" title="Favorskii reaction">Favorskii reaction</a></li> <li><a href="/wiki/Favorskii_rearrangement" title="Favorskii rearrangement">Favorskii rearrangement</a></li> <li><a href="/wiki/Ferrier_carbocyclization" title="Ferrier carbocyclization">Ferrier carbocyclization</a></li> <li><a href="/wiki/Ferrier_rearrangement" title="Ferrier rearrangement">Ferrier rearrangement</a></li> <li><a href="/wiki/Fischer%E2%80%93Hepp_rearrangement" title="Fischer–Hepp rearrangement">Fischer–Hepp rearrangement</a></li> <li><a href="/wiki/Fries_rearrangement" title="Fries rearrangement">Fries rearrangement</a></li> <li><a href="/wiki/Fritsch%E2%80%93Buttenberg%E2%80%93Wiechell_rearrangement" title="Fritsch–Buttenberg–Wiechell rearrangement">Fritsch–Buttenberg–Wiechell rearrangement</a></li> <li><a href="/wiki/Gabriel%E2%80%93Colman_rearrangement" title="Gabriel–Colman rearrangement">Gabriel–Colman rearrangement</a></li> <li><a href="/wiki/Group_transfer_reaction" title="Group transfer reaction">Group transfer reaction</a></li> <li><a href="/wiki/Halogen_dance_rearrangement" title="Halogen dance rearrangement">Halogen dance rearrangement</a></li> <li><a href="/wiki/Hayashi_rearrangement" title="Hayashi rearrangement">Hayashi rearrangement</a></li> <li><a href="/wiki/Hofmann_rearrangement" title="Hofmann rearrangement">Hofmann rearrangement</a></li> <li><a href="/wiki/Hofmann%E2%80%93Martius_rearrangement" title="Hofmann–Martius rearrangement">Hofmann–Martius rearrangement</a></li> <li><a href="/wiki/Ireland%E2%80%93Claisen_rearrangement" title="Ireland–Claisen rearrangement">Ireland–Claisen rearrangement</a></li> <li><a href="/wiki/Jacobsen_rearrangement" title="Jacobsen rearrangement">Jacobsen rearrangement</a></li> <li><a href="/wiki/Kornblum%E2%80%93DeLaMare_rearrangement" title="Kornblum–DeLaMare rearrangement">Kornblum–DeLaMare rearrangement</a></li> <li><a href="/wiki/Kowalski_ester_homologation" title="Kowalski ester homologation">Kowalski ester homologation</a></li> <li><a href="/wiki/Lobry_de_Bruyn%E2%80%93Van_Ekenstein_transformation" title="Lobry de Bruyn–Van Ekenstein transformation">Lobry de Bruyn–Van Ekenstein transformation</a></li> <li><a href="/wiki/Lossen_rearrangement" title="Lossen rearrangement">Lossen rearrangement</a></li> <li><a href="/wiki/McFadyen%E2%80%93Stevens_reaction" title="McFadyen–Stevens reaction">McFadyen–Stevens reaction</a></li> <li><a href="/wiki/McLafferty_rearrangement" title="McLafferty rearrangement">McLafferty rearrangement</a></li> <li><a href="/wiki/Meyer%E2%80%93Schuster_rearrangement" title="Meyer–Schuster rearrangement">Meyer–Schuster rearrangement</a></li> <li><a href="/wiki/Mislow%E2%80%93Evans_rearrangement" title="Mislow–Evans rearrangement">Mislow–Evans rearrangement</a></li> <li><a href="/wiki/Mumm_rearrangement" title="Mumm rearrangement">Mumm rearrangement</a></li> <li><a href="/wiki/Myers_allene_synthesis" title="Myers allene synthesis">Myers allene synthesis</a></li> <li><a href="/wiki/Nazarov_cyclization_reaction" title="Nazarov cyclization reaction">Nazarov cyclization reaction</a></li> <li><a href="/wiki/Neber_rearrangement" title="Neber rearrangement">Neber rearrangement</a></li> <li><a href="/wiki/Newman%E2%80%93Kwart_rearrangement" title="Newman–Kwart rearrangement">Newman–Kwart rearrangement</a></li> <li><a href="/wiki/Overman_rearrangement" title="Overman rearrangement">Overman rearrangement</a></li> <li><a href="/wiki/Oxy-Cope_rearrangement" title="Oxy-Cope rearrangement">Oxy-Cope rearrangement</a></li> <li><a href="/wiki/Pericyclic_reaction" title="Pericyclic reaction">Pericyclic reaction</a></li> <li><a href="/wiki/Piancatelli_rearrangement" title="Piancatelli rearrangement">Piancatelli rearrangement</a></li> <li><a href="/wiki/Pinacol_rearrangement" title="Pinacol rearrangement">Pinacol rearrangement</a></li> <li><a href="/wiki/Pummerer_rearrangement" title="Pummerer rearrangement">Pummerer rearrangement</a></li> <li><a href="/wiki/Ramberg%E2%80%93B%C3%A4cklund_reaction" title="Ramberg–Bäcklund reaction">Ramberg–Bäcklund reaction</a></li> <li><a href="/wiki/Ring_expansion_and_contraction" title="Ring expansion and contraction">Ring expansion and contraction</a></li> <li><a href="/wiki/Ring-closing_metathesis" title="Ring-closing metathesis">Ring-closing metathesis</a></li> <li><a href="/wiki/Rupe_reaction" class="mw-redirect" title="Rupe reaction">Rupe reaction</a></li> <li><a href="/wiki/Schmidt_reaction" title="Schmidt reaction">Schmidt reaction</a></li> <li><a href="/wiki/Semipinacol_rearrangement" title="Semipinacol rearrangement">Semipinacol rearrangement</a></li> <li><a href="/wiki/Seyferth%E2%80%93Gilbert_homologation" title="Seyferth–Gilbert homologation">Seyferth–Gilbert homologation</a></li> <li><a href="/wiki/Sigmatropic_reaction" title="Sigmatropic reaction">Sigmatropic reaction</a></li> <li><a href="/wiki/Skatteb%C3%B8l_rearrangement" title="Skattebøl rearrangement">Skattebøl rearrangement</a></li> <li><a href="/wiki/Smiles_rearrangement" title="Smiles rearrangement">Smiles rearrangement</a></li> <li><a href="/wiki/Sommelet%E2%80%93Hauser_rearrangement" title="Sommelet–Hauser rearrangement">Sommelet–Hauser rearrangement</a></li> <li><a href="/wiki/Stevens_rearrangement" title="Stevens rearrangement">Stevens rearrangement</a></li> <li><a href="/wiki/Stieglitz_rearrangement" title="Stieglitz rearrangement">Stieglitz rearrangement</a></li> <li><a href="/wiki/Thermal_rearrangement_of_aromatic_hydrocarbons" title="Thermal rearrangement of aromatic hydrocarbons">Thermal rearrangement of aromatic hydrocarbons</a></li> <li><a href="/wiki/Tiffeneau%E2%80%93Demjanov_rearrangement" title="Tiffeneau–Demjanov rearrangement">Tiffeneau–Demjanov rearrangement</a></li> <li><a href="/wiki/Vinylcyclopropane_rearrangement" title="Vinylcyclopropane rearrangement">Vinylcyclopropane rearrangement</a></li> <li><a href="/wiki/Wagner%E2%80%93Meerwein_rearrangement" title="Wagner–Meerwein rearrangement">Wagner–Meerwein rearrangement</a></li> <li><a href="/wiki/Wallach_rearrangement" title="Wallach rearrangement">Wallach rearrangement</a></li> <li><a href="/wiki/Weerman_degradation" title="Weerman degradation">Weerman degradation</a></li> <li><a href="/wiki/Westphalen%E2%80%93Lettr%C3%A9_rearrangement" title="Westphalen–Lettré rearrangement">Westphalen–Lettré rearrangement</a></li> <li><a href="/wiki/Willgerodt_rearrangement" title="Willgerodt rearrangement">Willgerodt rearrangement</a></li> <li><a href="/wiki/Wolff_rearrangement" title="Wolff rearrangement">Wolff rearrangement</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:7.5em"><a href="/wiki/Ring_forming_reaction" title="Ring forming reaction">Ring forming <br /> reactions</a></th><td class="navbox-list-with-group navbox-list navbox-even" style="padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1,3-Dipolar_cycloaddition" title="1,3-Dipolar cycloaddition">1,3-Dipolar cycloaddition</a></li> <li><a href="/wiki/Annulation" title="Annulation">Annulation</a></li> <li><a href="/wiki/Azide-alkyne_Huisgen_cycloaddition" title="Azide-alkyne Huisgen cycloaddition">Azide-alkyne Huisgen cycloaddition</a></li> <li><a href="/wiki/Baeyer%E2%80%93Emmerling_indole_synthesis" title="Baeyer–Emmerling indole synthesis">Baeyer–Emmerling indole synthesis</a></li> <li><a href="/wiki/Bartoli_indole_synthesis" title="Bartoli indole synthesis">Bartoli indole synthesis</a></li> <li><a href="/wiki/Bergman_cyclization" title="Bergman cyclization">Bergman cyclization</a></li> <li><a href="/wiki/Biginelli_reaction" title="Biginelli reaction">Biginelli reaction</a></li> <li><a href="/wiki/Bischler%E2%80%93M%C3%B6hlau_indole_synthesis" title="Bischler–Möhlau indole synthesis">Bischler–Möhlau indole synthesis</a></li> <li><a href="/wiki/Bischler%E2%80%93Napieralski_reaction" title="Bischler–Napieralski reaction">Bischler–Napieralski reaction</a></li> <li><a href="/wiki/Blum%E2%80%93Ittah_aziridine_synthesis" title="Blum–Ittah aziridine synthesis">Blum–Ittah aziridine synthesis</a></li> <li><a href="/wiki/Bobbitt_reaction" title="Bobbitt reaction">Bobbitt reaction</a></li> <li><a href="/wiki/Bohlmann%E2%80%93Rahtz_pyridine_synthesis" title="Bohlmann–Rahtz pyridine synthesis">Bohlmann–Rahtz pyridine synthesis</a></li> <li><a href="/wiki/Borsche%E2%80%93Drechsel_cyclization" title="Borsche–Drechsel cyclization">Borsche–Drechsel cyclization</a></li> <li><a href="/wiki/Bucherer_carbazole_synthesis" title="Bucherer carbazole synthesis">Bucherer carbazole synthesis</a></li> <li><a href="/wiki/Bucherer%E2%80%93Bergs_reaction" title="Bucherer–Bergs reaction">Bucherer–Bergs reaction</a></li> <li><a href="/wiki/Cadogan%E2%80%93Sundberg_indole_synthesis" title="Cadogan–Sundberg indole synthesis">Cadogan–Sundberg indole synthesis</a></li> <li><a href="/wiki/Camps_quinoline_synthesis" title="Camps quinoline synthesis">Camps quinoline synthesis</a></li> <li><a href="/wiki/Chichibabin_pyridine_synthesis" title="Chichibabin pyridine synthesis">Chichibabin pyridine synthesis</a></li> <li><a href="/wiki/Cook%E2%80%93Heilbron_thiazole_synthesis" title="Cook–Heilbron thiazole synthesis">Cook–Heilbron thiazole synthesis</a></li> <li><a href="/wiki/Cycloaddition" title="Cycloaddition">Cycloaddition</a></li> <li><a href="/wiki/Darzens_reaction" title="Darzens reaction">Darzens reaction</a></li> <li><a href="/wiki/Davis%E2%80%93Beirut_reaction" title="Davis–Beirut reaction">Davis–Beirut reaction</a></li> <li><a href="/wiki/De_Kimpe_aziridine_synthesis" title="De Kimpe aziridine synthesis">De Kimpe aziridine synthesis</a></li> <li><a href="/wiki/Debus%E2%80%93Radziszewski_imidazole_synthesis" title="Debus–Radziszewski imidazole synthesis">Debus–Radziszewski imidazole synthesis</a></li> <li><a href="/wiki/Dieckmann_condensation" title="Dieckmann condensation">Dieckmann condensation</a></li> <li><a href="/wiki/Diels%E2%80%93Alder_reaction" title="Diels–Alder reaction">Diels–Alder reaction</a></li> <li><a href="/wiki/Feist%E2%80%93Benary_synthesis" title="Feist–Benary synthesis">Feist–Benary synthesis</a></li> <li><a href="/wiki/Ferrario%E2%80%93Ackermann_reaction" title="Ferrario–Ackermann reaction">Ferrario–Ackermann reaction</a></li> <li><a href="/wiki/Fiesselmann_thiophene_synthesis" title="Fiesselmann thiophene synthesis">Fiesselmann thiophene synthesis</a></li> <li><a href="/wiki/Fischer_indole_synthesis" title="Fischer indole synthesis">Fischer indole synthesis</a></li> <li><a href="/wiki/Fischer_oxazole_synthesis" title="Fischer oxazole synthesis">Fischer oxazole synthesis</a></li> <li><a href="/wiki/Friedl%C3%A4nder_synthesis" title="Friedländer synthesis">Friedländer synthesis</a></li> <li><a href="/wiki/Gewald_reaction" title="Gewald reaction">Gewald reaction</a></li> <li><a href="/wiki/Graham_reaction" title="Graham reaction">Graham reaction</a></li> <li><a href="/wiki/Hantzsch_pyridine_synthesis" title="Hantzsch pyridine synthesis">Hantzsch pyridine synthesis</a></li> <li><a href="/wiki/Hegedus_indole_synthesis" title="Hegedus indole synthesis">Hegedus indole synthesis</a></li> <li><a href="/wiki/Hemetsberger_indole_synthesis" title="Hemetsberger indole synthesis">Hemetsberger indole synthesis</a></li> <li><a href="/wiki/Hofmann%E2%80%93L%C3%B6ffler_reaction" title="Hofmann–Löffler reaction">Hofmann–Löffler reaction</a></li> <li><a href="/wiki/Hurd%E2%80%93Mori_1,2,3-thiadiazole_synthesis" title="Hurd–Mori 1,2,3-thiadiazole synthesis">Hurd–Mori 1,2,3-thiadiazole synthesis</a></li> <li><a href="/wiki/Iodolactonization" title="Iodolactonization">Iodolactonization</a></li> <li><a href="/wiki/Isay_reaction" title="Isay reaction">Isay reaction</a></li> <li><a href="/wiki/Jacobsen_epoxidation" title="Jacobsen epoxidation">Jacobsen epoxidation</a></li> <li><a href="/wiki/Johnson%E2%80%93Corey%E2%80%93Chaykovsky_reaction" title="Johnson–Corey–Chaykovsky reaction">Johnson–Corey–Chaykovsky reaction</a></li> <li><a href="/wiki/Knorr_pyrrole_synthesis" title="Knorr pyrrole synthesis">Knorr pyrrole synthesis</a></li> <li><a href="/wiki/Knorr_quinoline_synthesis" title="Knorr quinoline synthesis">Knorr quinoline synthesis</a></li> <li><a href="/wiki/Kr%C3%B6hnke_pyridine_synthesis" title="Kröhnke pyridine synthesis">Kröhnke pyridine synthesis</a></li> <li><a href="/wiki/Kulinkovich_reaction" title="Kulinkovich reaction">Kulinkovich reaction</a></li> <li><a href="/wiki/Larock_indole_synthesis" title="Larock indole synthesis">Larock indole synthesis</a></li> <li><a href="/wiki/Madelung_synthesis" title="Madelung synthesis">Madelung synthesis</a></li> <li><a href="/wiki/Nazarov_cyclization_reaction" title="Nazarov cyclization reaction">Nazarov cyclization reaction</a></li> <li><a href="/wiki/Nenitzescu_indole_synthesis" title="Nenitzescu indole synthesis">Nenitzescu indole synthesis</a></li> <li><a href="/wiki/Niementowski_quinazoline_synthesis" title="Niementowski quinazoline synthesis">Niementowski quinazoline synthesis</a></li> <li><a href="/wiki/Niementowski_quinoline_synthesis" title="Niementowski quinoline synthesis">Niementowski quinoline synthesis</a></li> <li><a href="/wiki/Paal%E2%80%93Knorr_synthesis" title="Paal–Knorr synthesis">Paal–Knorr synthesis</a></li> <li><a href="/wiki/Patern%C3%B2%E2%80%93B%C3%BCchi_reaction" title="Paternò–Büchi reaction">Paternò–Büchi reaction</a></li> <li><a href="/wiki/Pechmann_condensation" title="Pechmann condensation">Pechmann condensation</a></li> <li><a href="/wiki/Petrenko-Kritschenko_piperidone_synthesis" title="Petrenko-Kritschenko piperidone synthesis">Petrenko-Kritschenko piperidone synthesis</a></li> <li><a href="/wiki/Pictet%E2%80%93Spengler_reaction" title="Pictet–Spengler reaction">Pictet–Spengler reaction</a></li> <li><a href="/wiki/Pomeranz%E2%80%93Fritsch_reaction" title="Pomeranz–Fritsch reaction">Pomeranz–Fritsch reaction</a></li> <li><a href="/wiki/Prilezhaev_reaction" title="Prilezhaev reaction">Prilezhaev reaction</a></li> <li><a href="/wiki/Pschorr_cyclization" title="Pschorr cyclization">Pschorr cyclization</a></li> <li><a href="/wiki/Reissert_indole_synthesis" title="Reissert indole synthesis">Reissert indole synthesis</a></li> <li><a href="/wiki/Ring-closing_metathesis" title="Ring-closing metathesis">Ring-closing metathesis</a></li> <li><a href="/wiki/Robinson_annulation" title="Robinson annulation">Robinson annulation</a></li> <li><a href="/wiki/Sharpless_epoxidation" title="Sharpless epoxidation">Sharpless epoxidation</a></li> <li><a href="/wiki/Simmons%E2%80%93Smith_reaction" title="Simmons–Smith reaction">Simmons–Smith reaction</a></li> <li><a href="/wiki/Skraup_reaction" title="Skraup reaction">Skraup reaction</a></li> <li><a href="/wiki/Urech_hydantoin_synthesis" title="Urech hydantoin synthesis">Urech hydantoin synthesis</a></li> <li><a href="/wiki/Van_Leusen_reaction" title="Van Leusen reaction">Van Leusen reaction</a></li> <li><a href="/wiki/Wenker_synthesis" title="Wenker synthesis">Wenker synthesis</a></li></ul> </div><table class="nowraplinks navbox-subgroup" style="border-spacing:0"><tbody><tr><th scope="row" class="navbox-group" style="width:1%"><a href="/wiki/Cycloaddition" title="Cycloaddition">Cycloaddition</a></th><td class="navbox-list-with-group navbox-list navbox-odd" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/1,3-Dipolar_cycloaddition" title="1,3-Dipolar cycloaddition">1,3-Dipolar cycloaddition</a></li> <li><a href="/wiki/4%2B4_Photocycloaddition" title="4+4 Photocycloaddition">4+4 Photocycloaddition</a></li> <li><a href="/wiki/(4%2B3)_cycloaddition" title="(4+3) cycloaddition">(4+3) cycloaddition</a></li> <li><a href="/wiki/6%2B4_Cycloaddition" title="6+4 Cycloaddition">6+4 Cycloaddition</a></li> <li><a href="/wiki/Alkyne_trimerisation" title="Alkyne trimerisation">Alkyne trimerisation</a></li> <li><a href="/wiki/Aza-Diels%E2%80%93Alder_reaction" title="Aza-Diels–Alder reaction">Aza-Diels–Alder reaction</a></li> <li><a href="/wiki/Azide-alkyne_Huisgen_cycloaddition" title="Azide-alkyne Huisgen cycloaddition">Azide-alkyne Huisgen cycloaddition</a></li> <li><a href="/wiki/Bradsher_cycloaddition" title="Bradsher cycloaddition">Bradsher cycloaddition</a></li> <li><a href="/wiki/Cheletropic_reaction" title="Cheletropic reaction">Cheletropic reaction</a></li> <li><a href="/wiki/Conia-ene_reaction" title="Conia-ene reaction">Conia-ene reaction</a></li> <li><a href="/wiki/Cyclopropanation" title="Cyclopropanation">Cyclopropanation</a></li> <li><a href="/wiki/Diazoalkane_1,3-dipolar_cycloaddition" title="Diazoalkane 1,3-dipolar cycloaddition">Diazoalkane 1,3-dipolar cycloaddition</a></li> <li><a href="/wiki/Diels%E2%80%93Alder_reaction" title="Diels–Alder reaction">Diels–Alder reaction</a></li> <li><a href="/wiki/Enone%E2%80%93alkene_cycloadditions" title="Enone–alkene cycloadditions">Enone–alkene cycloadditions</a></li> <li><a href="/wiki/Hexadehydro_Diels%E2%80%93Alder_reaction" title="Hexadehydro Diels–Alder reaction">Hexadehydro Diels–Alder reaction</a></li> <li><a href="/wiki/Intramolecular_Diels%E2%80%93Alder_cycloaddition" title="Intramolecular Diels–Alder cycloaddition">Intramolecular Diels–Alder cycloaddition</a></li> <li><a href="/wiki/Inverse_electron-demand_Diels%E2%80%93Alder_reaction" title="Inverse electron-demand Diels–Alder reaction">Inverse electron-demand Diels–Alder reaction</a></li> <li><a href="/wiki/Ketene_cycloaddition" title="Ketene cycloaddition">Ketene cycloaddition</a></li> <li><a href="/wiki/McCormack_reaction" title="McCormack reaction">McCormack reaction</a></li> <li><a href="/wiki/Metal-centered_cycloaddition_reactions" title="Metal-centered cycloaddition reactions">Metal-centered cycloaddition reactions</a></li> <li><a href="/wiki/Nitrone-olefin_(3%2B2)_cycloaddition" title="Nitrone-olefin (3+2) cycloaddition">Nitrone-olefin (3+2) cycloaddition</a></li> <li><a href="/wiki/Oxo-Diels%E2%80%93Alder_reaction" title="Oxo-Diels–Alder reaction">Oxo-Diels–Alder reaction</a></li> <li><a href="/wiki/Ozonolysis" title="Ozonolysis">Ozonolysis</a></li> <li><a href="/wiki/Pauson%E2%80%93Khand_reaction" title="Pauson–Khand reaction">Pauson–Khand reaction</a></li> <li><a href="/wiki/Povarov_reaction" title="Povarov reaction">Povarov reaction</a></li> <li><a href="/wiki/Prato_reaction" title="Prato reaction">Prato reaction</a></li> <li><a href="/wiki/Retro-Diels%E2%80%93Alder_reaction" title="Retro-Diels–Alder reaction">Retro-Diels–Alder reaction</a></li> <li><a href="/wiki/Staudinger_synthesis" title="Staudinger synthesis">Staudinger synthesis</a></li> <li><a href="/wiki/Trimethylenemethane_cycloaddition" title="Trimethylenemethane cycloaddition">Trimethylenemethane cycloaddition</a></li> <li><a href="/wiki/Vinylcyclopropane_(5%2B2)_cycloaddition" title="Vinylcyclopropane (5+2) cycloaddition">Vinylcyclopropane (5+2) cycloaddition</a></li> <li><a href="/wiki/Wagner-Jauregg_reaction" title="Wagner-Jauregg reaction">Wagner-Jauregg reaction</a></li></ul> </div></td></tr><tr><th scope="row" class="navbox-group" style="width:1%">Heterocycle forming reactions</th><td class="navbox-list-with-group navbox-list navbox-even" style="width:100%;padding:0"><div style="padding:0 0.25em"> <ul><li><a href="/wiki/Algar%E2%80%93Flynn%E2%80%93Oyamada_reaction" title="Algar–Flynn–Oyamada reaction">Algar–Flynn–Oyamada reaction</a></li> <li><a href="/wiki/Allan%E2%80%93Robinson_reaction" title="Allan–Robinson reaction">Allan–Robinson reaction</a></li> <li><a href="/wiki/Auwers_synthesis" title="Auwers synthesis">Auwers synthesis</a></li> <li><a href="/wiki/Bamberger_triazine_synthesis" title="Bamberger triazine synthesis">Bamberger triazine synthesis</a></li> <li><a href="/wiki/Banert_cascade" title="Banert cascade">Banert cascade</a></li> <li><a href="/wiki/Barton%E2%80%93Zard_reaction" title="Barton–Zard reaction">Barton–Zard reaction</a></li> <li><a href="/wiki/Bernthsen_acridine_synthesis" title="Bernthsen acridine synthesis">Bernthsen acridine synthesis</a></li> <li><a href="/wiki/Bischler%E2%80%93Napieralski_reaction" title="Bischler–Napieralski reaction">Bischler–Napieralski reaction</a></li> <li><a href="/wiki/Bobbitt_reaction" title="Bobbitt reaction">Bobbitt reaction</a></li> <li><a href="/wiki/Boger_pyridine_synthesis" title="Boger pyridine synthesis">Boger pyridine synthesis</a></li> <li><a href="/wiki/Borsche%E2%80%93Drechsel_cyclization" title="Borsche–Drechsel cyclization">Borsche–Drechsel cyclization</a></li> <li><a href="/wiki/Bucherer_carbazole_synthesis" title="Bucherer carbazole synthesis">Bucherer carbazole synthesis</a></li> <li><a href="/wiki/Bucherer%E2%80%93Bergs_reaction" title="Bucherer–Bergs reaction">Bucherer–Bergs reaction</a></li> <li><a href="/wiki/Chichibabin_pyridine_synthesis" title="Chichibabin pyridine synthesis">Chichibabin pyridine synthesis</a></li> <li><a href="/wiki/Cook%E2%80%93Heilbron_thiazole_synthesis" title="Cook–Heilbron thiazole synthesis">Cook–Heilbron thiazole synthesis</a></li> <li><a href="/wiki/Diazoalkane_1,3-dipolar_cycloaddition" title="Diazoalkane 1,3-dipolar cycloaddition">Diazoalkane 1,3-dipolar cycloaddition</a></li> <li><a href="/wiki/Einhorn%E2%80%93Brunner_reaction" title="Einhorn–Brunner reaction">Einhorn–Brunner reaction</a></li> <li><a href="/wiki/Erlenmeyer%E2%80%93Pl%C3%B6chl_azlactone_and_amino-acid_synthesis" title="Erlenmeyer–Plöchl azlactone and amino-acid synthesis">Erlenmeyer–Plöchl azlactone and amino-acid synthesis</a></li> <li><a href="/wiki/Feist%E2%80%93Benary_synthesis" title="Feist–Benary synthesis">Feist–Benary synthesis</a></li> <li><a href="/wiki/Fischer_oxazole_synthesis" title="Fischer oxazole synthesis">Fischer oxazole synthesis</a></li> <li><a href="/wiki/Gabriel%E2%80%93Colman_rearrangement" title="Gabriel–Colman rearrangement">Gabriel–Colman rearrangement</a></li> <li><a href="/wiki/Gewald_reaction" title="Gewald reaction">Gewald reaction</a></li> <li><a href="/wiki/Hantzsch_ester" title="Hantzsch ester">Hantzsch ester</a></li> <li><a href="/wiki/Hantzsch_pyridine_synthesis" title="Hantzsch pyridine synthesis">Hantzsch pyridine synthesis</a></li> <li><a href="/wiki/Herz_reaction" title="Herz reaction">Herz reaction</a></li> <li><a href="/wiki/Knorr_pyrrole_synthesis" title="Knorr pyrrole synthesis">Knorr pyrrole synthesis</a></li> <li><a href="/wiki/Kr%C3%B6hnke_pyridine_synthesis" title="Kröhnke pyridine synthesis">Kröhnke pyridine synthesis</a></li> <li><a href="/wiki/Lectka_enantioselective_beta-lactam_synthesis" title="Lectka enantioselective beta-lactam synthesis">Lectka enantioselective beta-lactam synthesis</a></li> <li><a href="/wiki/Lehmstedt%E2%80%93Tanasescu_reaction" title="Lehmstedt–Tanasescu reaction">Lehmstedt–Tanasescu reaction</a></li> <li><a href="/wiki/Niementowski_quinazoline_synthesis" title="Niementowski quinazoline synthesis">Niementowski quinazoline synthesis</a></li> <li><a href="/wiki/Nitrone-olefin_(3%2B2)_cycloaddition" title="Nitrone-olefin (3+2) cycloaddition">Nitrone-olefin (3+2) cycloaddition</a></li> <li><a href="/wiki/Paal%E2%80%93Knorr_synthesis" title="Paal–Knorr synthesis">Paal–Knorr synthesis</a></li> <li><a href="/wiki/Pellizzari_reaction" title="Pellizzari reaction">Pellizzari reaction</a></li> <li><a href="/wiki/Pictet%E2%80%93Spengler_reaction" title="Pictet–Spengler reaction">Pictet–Spengler reaction</a></li> <li><a href="/wiki/Pomeranz%E2%80%93Fritsch_reaction" title="Pomeranz–Fritsch reaction">Pomeranz–Fritsch reaction</a></li> <li><a href="/wiki/Prilezhaev_reaction" title="Prilezhaev reaction">Prilezhaev reaction</a></li> <li><a href="/wiki/Robinson%E2%80%93Gabriel_synthesis" title="Robinson–Gabriel synthesis">Robinson–Gabriel synthesis</a></li> <li><a href="/wiki/Stoll%C3%A9_synthesis" title="Stollé synthesis">Stollé synthesis</a></li> <li><a href="/wiki/Urech_hydantoin_synthesis" title="Urech hydantoin synthesis">Urech hydantoin synthesis</a></li> <li><a href="/wiki/Wenker_synthesis" title="Wenker synthesis">Wenker synthesis</a></li> <li><a href="/wiki/Wohl%E2%80%93Aue_reaction" title="Wohl–Aue reaction">Wohl–Aue reaction</a></li></ul> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table><div> </div></td></tr></tbody></table></div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Retrieved from "<a dir="ltr" href="https://en.wikipedia.org/w/index.php?title=Aromaticity&oldid=1250162573">https://en.wikipedia.org/w/index.php?title=Aromaticity&oldid=1250162573</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Help:Category" title="Help:Category">Categories</a>: <ul><li><a href="/wiki/Category:Aromatic_compounds" title="Category:Aromatic compounds">Aromatic compounds</a></li><li><a href="/wiki/Category:Physical_organic_chemistry" 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