Asymmetric Michael Addition of α-Substituted Isocyanoacetates with Maleimides Catalyzed by Chiral Tertiary Amine Thiourea
作者:Jian-Fei Bai、Liang-Liang Wang、Lin Peng、Yun-Long Guo、Li-Na Jia、Fang Tian、Guang-Yun He、Xiao-Ying Xu、Li-Xin Wang
DOI:10.1021/jo2025288
日期:2012.3.16
diastereoselective and enantioselective Michael addition of α-substituted isocyanoacetates with maleimidescatalyzed by bifunctional tertiary amine thioureas has been developed. Various chiral succinimide derivatives bearing adjacent quaternary and tertiary stereocenters were prepared in excellent yields (up to 98%), diastereoselectivities (up to 99:1), and enantioselectivities (up to 98% ee). The synthetic