Catalyst-Controlled Regioselective Suzuki Couplings at Both Positions of Dihaloimidazoles, Dihalooxazoles, and Dihalothiazoles
作者:Neil A. Strotman、Harry R. Chobanian、Jiafang He、Yan Guo、Peter G. Dormer、Christina M. Jones、Janelle E. Steves
DOI:10.1021/jo100148x
日期:2010.3.5
dihaloazoles can be monoarylated at a single C−X bond with high selectivity via Suzukicoupling. By changing the palladium catalyst employed, the selectivity can be switched for some dihaloazoles, allowing for Suzukicoupling at the other, traditionally less reactive C−X bond. These conditions are applicable to coupling of a wide variety of aryl-, heteroaryl-, cyclopropyl-, and vinylboronic acids with