Metal-Free N-Arylation of Secondary Amides at Room Temperature
摘要:
The arylation of secondary acyclic amides has been achieved with diaryliodonium salts under mild and metal-free conditions. The methodology has a wide scope, allows synthesis of tertiary amides with highly congested aryl moieties, and avoids the regioselectivity problems observed in reactions with (diacetoxyiodo)benzene.
Pd(II)-catalyzed intramolecular C–H activation/C–C cross coupling for the synthesis of carbazoles from diaryl acetamides
作者:Sichang Wang、Hui Mao、Zhangqin Ni、Yuanjiang Pan
DOI:10.1016/j.tetlet.2011.11.082
日期:2012.2
Pd(II)-catalyzed intramolecular C-H activation/C-C cross coupling within N,N-diphenyl-acetamides allows the efficient formation of differently substituted carbazoles. In this cross-dehydrogenative coupling, many different functional groups are tolerated and the starting material N,N-diphenyl-acetamides can be easily prepared in one step from commercially available acetanilides and iodobenzenes. (C) 2011 Elsevier Ltd. All rights reserved.