Rhodium-catalyzed Michael addition of arylboronic acids to 3-alkylenyloxindoles: asymmetric synthesis of functionalized oxindoles
作者:Xiangyang Zhang、Guihua Chen、Peng Cao、Jibing Liu、Jian Liao
DOI:10.1016/j.tetlet.2011.11.071
日期:2012.1
The rhodium-catalyzed diastereo- and enantioselective Michael addition of arylboronic acids to 3-alkyl-enyloxindoles has been developed with (R)-binap as a ligand. A wide variety of the desired functionalized oxindoles are smoothly obtained in high yields (up to 99%) with high enantioselectivities (up to 92% ee) and good diastereoselectivities (up to 82:18). (C) 2011 Elsevier Ltd. All rights reserved.