Core Structure-Based Design of Organocatalytic [3+2]-Cycloaddition Reactions: Highly Efficient and Stereocontrolled Syntheses of 3,3′-Pyrrolidonyl Spirooxindoles
作者:Bin Tan、Xiaofei Zeng、Wendy Wen Yi Leong、Zugui Shi、Carlos F. Barbas、Guofu Zhong
DOI:10.1002/chem.201103449
日期:2012.1.2
Extraordinary levels of stereocontrol were achieved in an efficientorganocatalytic asymmetric [3+2]‐cycloaddition reaction between an α‐isothiocyanato imide and various methyleneindolinones. Simple precursors were used for the rapid construction of spirocyclic oxindole derivatives with high enantiopurity and structural diversity, thus providing a new avenue of significance to medicinal chemistry and