Highly Enantioselective Organocatalyzed Vinylogous Michael-Type Reaction for the Construction of Trifluoromethylated All-Carbon Quaternary Stereocenters
作者:Qiao Chen、Guoqiang Wang、Xianxing Jiang、Zhaoqing Xu、Li Lin、Rui Wang
DOI:10.1021/ol500157b
日期:2014.3.7
The first example of a highlyenantioselectivevinylogous Michael-type reaction of β,β-disubstituted nitroalkenes is disclosed. A series of biologically important chiral oxindoles, featuring a trifluoromethylated all-carbon quaternary chiral center, were obtained in good yields with excellent enantioselectivities (up to >99% ee).