Aromatization (original) (raw)
Aromatization is a chemical reaction in which an aromatic system is formed from a single nonaromatic precursor. Typically aromatization is achieved by dehydrogenation of existing cyclic compounds, illustrated by the conversion of cyclohexane into benzene. Aromatization includes the formation of heterocyclic systems.
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| dbo:abstract | Aromatisierung bezeichnet die Reaktion einer ungesättigten cyclischen chemischen Verbindung zu einer aromatischen Verbindung. Da hierbei die Oxidationsstufe der zuvor ungesättigten Ringatome ansteigt, handelt es sich um eine Oxidation. Die Aromatisierung ist in der Regel energetisch günstig, da ein energiearmes mesomeriestabilisiertes aromatisches System entsteht. Aromatisierungen sind oftmals die letzten Reaktionsschritte in der Synthese von Heteroaromaten, beispielsweise bei gängigen Pyridin-, Chinolin-, Isochinolin- oder Indolsynthesen. Bei elektrophilen aromatischen Substitutionen treten Aromatisierungen durch Abspaltung eines Protons als letzter Reaktionsschritt auf. Da in diesem Fall bereits ein Aromat als Edukt vorlag (1) und das aromatische System nur intermediär aufgebrochen wird (2b), spricht man in diesem Fall von einer Rearomatisierung. (de) Aromatization is a chemical reaction in which an aromatic system is formed from a single nonaromatic precursor. Typically aromatization is achieved by dehydrogenation of existing cyclic compounds, illustrated by the conversion of cyclohexane into benzene. Aromatization includes the formation of heterocyclic systems. (en) Aromatización es el proceso químico mediante el cual una molécula orgánica (o una parte de ella) es convertida en un anillo bencénico (también llamado anillo aromático). La tautomería ceto-enólica hace parte de dicho proceso químico, por ejemplo en la biosíntesis de compuestos aromáticos en las plantas y microorganismos. * Datos: Q698026 (es) L'aromatisation est une réaction chimique convertissant un composé organique non aromatique en un composé aromatique. Elle est généralement réalisée par déshydrogénation d'un composé cyclique, comme l'illustre la conversion du cyclohexane en benzène. L'aromatisation inclut les composés hétérocycliques. Dans la mesure où l'état d'oxydation des atomes du précurseur s'accroît, il s'agit d'une oxydation. L'aromatisation est généralement thermodynamiquement favorable car elle conduit à la formation d'un système conjugué de faible énergie et stabilisé par mésomérie. * Aromatisation du méthylcyclohexane en toluène, réaction catalysée par le platine lors du raffinage du pétrole en essence. (fr) 방향족화(芳香族化, 영어: aromatization)는 단일 비방향족 전구체로부터 방향족 시스템이 형성되는 화학 반응이다. 전형적인 방향족화는 기존의 고리 화합물의 탈수소화에 의해 이루어지며, 대표적인 예로 사이클로헥세인을 벤젠으로 전환시키는 반응이 있다. 방향족화에는 헤테로고리 시스템의 형성이 포함된다. (ko) A aromatização é uma reação química na qual um sistema aromático é formado. Também pode referir-se à produção de uma nova moiety aromática numa molécula que já é aromática. (pt) Ароматизація (рос. ароматизация; англ. aromatization; нім. Aromatisierung) — перетворення неароматичних сполук в ароматичні або гетероароматичні в результаті дегідрування, дегідратації під дією оксидаторів, дегідратуючих чинників. (uk) |
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| rdfs:comment | Aromatization is a chemical reaction in which an aromatic system is formed from a single nonaromatic precursor. Typically aromatization is achieved by dehydrogenation of existing cyclic compounds, illustrated by the conversion of cyclohexane into benzene. Aromatization includes the formation of heterocyclic systems. (en) Aromatización es el proceso químico mediante el cual una molécula orgánica (o una parte de ella) es convertida en un anillo bencénico (también llamado anillo aromático). La tautomería ceto-enólica hace parte de dicho proceso químico, por ejemplo en la biosíntesis de compuestos aromáticos en las plantas y microorganismos. * Datos: Q698026 (es) 방향족화(芳香族化, 영어: aromatization)는 단일 비방향족 전구체로부터 방향족 시스템이 형성되는 화학 반응이다. 전형적인 방향족화는 기존의 고리 화합물의 탈수소화에 의해 이루어지며, 대표적인 예로 사이클로헥세인을 벤젠으로 전환시키는 반응이 있다. 방향족화에는 헤테로고리 시스템의 형성이 포함된다. (ko) A aromatização é uma reação química na qual um sistema aromático é formado. Também pode referir-se à produção de uma nova moiety aromática numa molécula que já é aromática. (pt) Ароматизація (рос. ароматизация; англ. aromatization; нім. Aromatisierung) — перетворення неароматичних сполук в ароматичні або гетероароматичні в результаті дегідрування, дегідратації під дією оксидаторів, дегідратуючих чинників. (uk) Aromatisierung bezeichnet die Reaktion einer ungesättigten cyclischen chemischen Verbindung zu einer aromatischen Verbindung. Da hierbei die Oxidationsstufe der zuvor ungesättigten Ringatome ansteigt, handelt es sich um eine Oxidation. Die Aromatisierung ist in der Regel energetisch günstig, da ein energiearmes mesomeriestabilisiertes aromatisches System entsteht. Aromatisierungen sind oftmals die letzten Reaktionsschritte in der Synthese von Heteroaromaten, beispielsweise bei gängigen Pyridin-, Chinolin-, Isochinolin- oder Indolsynthesen. (de) L'aromatisation est une réaction chimique convertissant un composé organique non aromatique en un composé aromatique. Elle est généralement réalisée par déshydrogénation d'un composé cyclique, comme l'illustre la conversion du cyclohexane en benzène. L'aromatisation inclut les composés hétérocycliques. Dans la mesure où l'état d'oxydation des atomes du précurseur s'accroît, il s'agit d'une oxydation. L'aromatisation est généralement thermodynamiquement favorable car elle conduit à la formation d'un système conjugué de faible énergie et stabilisé par mésomérie. (fr) |
| rdfs:label | Aromatisierung (Chemie) (de) Aromatization (en) Aromatización (es) Aromatisation (fr) 방향족화 (ko) Aromatização (pt) Ароматизація (uk) |
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