A Facile Approach for the Asymmetric Synthesis of Oxindoles with a 3-Sulfenyl-Substituted Quaternary Stereocenter
作者:Xiaowei Dou、Bo Zhou、Weijun Yao、Fangrui Zhong、Chunhui Jiang、Yixin Lu
DOI:10.1021/ol402579x
日期:2013.10.4
With the employment of a threonine-incorporating multifunctional catalyst 9, Michael addition of 3-sulfenyloxindoles to nitroolefins proceeded stereoselectively, leading to the formation of oxindoles with a 3-sulfenyl-substituted quaternary center in excellent yields, and with high diastereoselectivities and excellent enantioselectivities.