Palladium-Catalyzed Oxidative Acetoxylation of Benzylic C–H Bond Using Bidentate Auxiliary
作者:Long Ju、Jinzhong Yao、Zaihong Wu、Zhanxiang Liu、Yuhong Zhang
DOI:10.1021/jo401830k
日期:2013.11.1
Pd(OAc)(2)-catalyzed oxidative acetoxylation of benzylic C-H bonds utilizing a bidentate system has been explored. A variety of picolinoyl- or quinoline-2-carbonyl-protected toluidine derivatives react with PhI(OAc)(2) in the presence of Pd(OAc)(2) to afford the acetoxylated products in synthetically useful yields. A broad of functionalities, such as CH3, F, Cl, Br, I, COCH3, CO2Et, SO2CH3, and NO2, were tolerated. This transformation provides easy access to 2-hydroxymethylaniline derivatives.