作者:Erum K. Raja、Daniel J. DeSchepper、Sten O. Nilsson Lill、Douglas A. Klumpp
DOI:10.1021/jo300922p
日期:2012.7.6
Friedel–Crafts acylation has been known since the 1870s, and it is an important organic synthetic reaction leading to aromatic ketone products. Friedel–Crafts acylation is usually performed with carboxylic acid chlorides or anhydrides, while amides are generally not useful substrates in these reactions. Despite being the least reactive carboxylic acid derivative, we have found a series of amides capable of
Friedel-Crafts 酰化反应自 1870 年代就已为人所知,它是一种重要的有机合成反应,可生成芳香酮产品。Friedel-Crafts 酰化通常用羧酸氯化物或酸酐进行,而酰胺在这些反应中通常不是有用的底物。尽管是反应性最低的羧酸衍生物,但我们发现了一系列能够以良好的产率提供芳香酮的酰胺(55-96%,17 个例子)。我们提出了一种通过超亲电活化和随后裂解为酰基阳离子来减少 C-N 共振的机制。