Copper-Catalyzed Regio- and Stereoselective Intermolecular Three-Component Oxyarylation of Allenes
摘要:
A copper(II)-catalyzed intermolecular three-component oxyarylation of allenes using arylboronic acids as a carbon source and TEMPO as an oxygen source is described. The reaction proceeded under mild conditions with high regio- and stereo-selectivity and functional group tolerance. A plausible reaction mechanism is proposed, involving carbocupration of allenes, homolysis of the intervening allylcopper(II), and a radical TEMPO trap.
Copper-Catalyzed Regio- and Stereoselective Intermolecular Three-Component Oxyarylation of Allenes
作者:Taisuke Itoh、Yohei Shimizu、Motomu Kanai
DOI:10.1021/ol501022d
日期:2014.5.16
A copper(II)-catalyzed intermolecular three-component oxyarylation of allenes using arylboronic acids as a carbon source and TEMPO as an oxygen source is described. The reaction proceeded under mild conditions with high regio- and stereo-selectivity and functional group tolerance. A plausible reaction mechanism is proposed, involving carbocupration of allenes, homolysis of the intervening allylcopper(II), and a radical TEMPO trap.