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.
Novel synthetic method for allylic amination of cyclic allylic ethers using chlorosulfonyl isocyanate
作者:Sang Hwi Lee、In Su Kim、Qing Ri Li、Guang Ri Dong、Young Hoon Jung
DOI:10.1016/j.tetlet.2011.02.036
日期:2011.4
The introduction of amines to allylic or benzylic position of cyclic compounds with chlorosulfonylisocyanate is developed in high to excellent yields. This method provides a novel access to biologically active compounds including the framework of 1-aminoindanes, 1-aminotetralines, and 1-amino-2-hydroxy cyclic compounds. Mechanistic evidence for the reaction pathway is also provided.