Synthesis of α-Amino Amides via <i>N</i>,<i>O</i>-Acetals Derived from Weinreb Amides
作者:Sebastian Hirner、Peter Somfai
DOI:10.1021/jo9015166
日期:2009.10.16
An easy and straightforward synthesis of α-amino amides via a base-mediated rearrangement of modified Weinreb amides into N,O-acetals is presented. Subsequent arylation, alkylation, alkenylation, or alkynylation of this intermediate affords the corresponding α-amino amides in excellent yields. Furthermore, a more generalized protocol for the α-arylation of Weinreb amides lacking an α-amino moiety is
通过修饰的Weinreb酰胺的碱基介导的重排成N,O-乙缩醛,可以轻松而直接地合成α-氨基酰胺。该中间体的随后的芳基化,烷基化,烯基化或炔基化以优异的产率提供了相应的α-氨基酰胺。此外,还讨论了缺少α-氨基部分的Weinreb酰胺的α-芳基化的更为通用的方案。