Bifunctional thiophosphinamide catalyzed highly enantioselective Michael addition of acetone to (E)-2-azido β-nitrostyrenes and the subsequent reductive cyclization
作者:Hao Zhang、Youming Wang、Zhenghong Zhou
DOI:10.1016/j.tet.2018.08.052
日期:2018.10
2R)-1,2-diphenylethane-1,2-diamine is an efficient catalyst for the asymmetricMichael addition of acetone to (E)-2-azido β-nitrostyrenes. Under the optimal reactionconditions, the corresponding Michael addition products were obtained in excellent yields with almost perfect stereocontrol. Upon treatment with Et3SiH/InCl3, the Michael addition products could be successfully converted to the related