Asymmetric Double Michael Reaction Catalyzed by Simple Primary Amine Catalysts: A Straightforward Approach to Construct Spirocyclic Oxindoles
作者:Xiya Luo、Liangliang Wang、Lin Peng、Jianfei Bai、Lina Jia、Guangyun He、Fang Tian、Xiaoying Xu、Lixin Wang
DOI:10.1002/cjoc.201100543
日期:2012.5
The enantioselective double Michael reaction of N‐Boc‐3‐nonsubstitued oxindoles with dienones catalyzed by chiral monoimide protected cyclohexane‐1,2‐diamines was developed. A wide range of optically active spirocyclic oxindoles were obtained up to 98% yield and up to 89% ee.
开发了N ‐Boc‐3‐取代的吲哚与手性单酰亚胺保护的环己烷‐1,2‐二胺催化的二烯酮的对映选择性双Michael反应。获得了高达98%的收率和89%ee的多种旋光性螺环羟吲哚。