傅－克酰基化反应









傅里德耳－克夫特化醯化反應（簡稱傅－克醯基化反應）是一種傅－克反应，在質子酸或路易斯酸（如三氯化鋁）催化下，芳香性化合物與醯鹵或酸酐發生的親電子取代反應，為一改良的親電子取代反應。


Friedel-Crafts acylation of benzene by ethanoyl chloride


目录






  • 1 用途


  • 2 反應機理


  • 3 參見


  • 4 參考文獻


  • 5 外部連結





用途


傅-克醯基化反應的出現，主要是爲了合成的用途，因為烷基在進行取代反應形成碳陽離子容易進行重排，但是醯化反應中形成的醯陽離子(acylium ion)並不會發生重排現象，因為醯陽離子有個很重要的共振結構，而醯陽離子就會藉著共振來穩定，才不會形成碳陽離子重排，因此傅-克醯化反應有個很重要的用途就是避免碳陽離子發生重排，再經由克萊門森還原反應，消除醯基上的氧，而得到烷基，此過程也稱傅-克烷基化反應。



反應機理


Friedel-Crafts-Acylierung.svg



參見


  • 傅－克反應


參考文獻


  • NIH Thesaurus


外部連結




  • Federal Judicial Affairs of Canada case[永久失效連結]

  • Friedel-Crafts acylation of benzene



Nuvola apps edu science.svg  傅－克酰基化反应是一個關於化學反應的小作品。你可以通过編輯或修訂擴充其内容。







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