Silver‐Catalyzed Asymmetric Double Desymmetrization via Vinylogous Michael Addition of Prochiral α,α‐Dicyanoalkenes to Cyclopentendiones
作者:Kavita Choudhary、Harshit Joshi、Shweta Rohilla、Vinod K. Singh
DOI:10.1002/chem.202304078
日期:2024.4.5
An asymmetric double desymmetrization reaction has been realized through vinylogous Michael addition reaction of prochiral α,α-dicyanocyclohexane to 2,2-disubstituted cyclopentene-1,3-dione catalyzed by a chiral Ag-(R)-DTBM-SEGPHOS catalyst. This method enables the formation of four chiral centers, including an all-carbonquaternary stereocenter in a single C−C bond formation event.
在手性Ag-( R )-DTBM-SEGPHOS催化剂催化下,前手性α,α-二氰基环己烷与2,2-二取代环戊烯-1,3-二酮发生插烯迈克尔加成反应,实现了不对称双去对称反应。该方法能够在单个 C−C 键形成事件中形成四个手性中心,包括全碳四元立构中心。