Copper-Catalyzed Amidation of Allylic and Benzylic CH Bonds
作者:Guillaume Pelletier、David A. Powell
DOI:10.1021/ol062514u
日期:2006.12.1
[Structure: see text] A copper-catalyzedamidation of allylic and benzylic C-H bonds with both primary and secondary sulfonamides is described. The reaction is applicable to the coupling of a diverse set of hydrocarbon species with aryl, heteroaryl, and alkyl sulfonamides and is tolerant of a variety of functional groups. Mechanistic insight has been gained through the isolation of a benzylic acetate
A simple and efficient method for the direct oxidative coupling of amides with benzylic and allylic sp(3) C-H bonds using DDQ as an oxidant is described. A range of amides including benzamide, benzyl carbamate, and substituted sulfonamides reacted efficiently with various benzylic and allylic substrates under metal free conditions to afford amidation products in good to excellent yields. (C) 2012 Elsevier Ltd. All rights reserved.