ChemInform Abstract: Organocatalytic Asymmetric Michael Addition of 3‐Substituted Oxindoles to α,β‐Unsaturated Acyl Phosphonates for the Synthesis of 3,3′‐Disubstituted Oxindoles with Chiral Squaramides.

Abstract

AbstractA broad range of complex 3,3′‐disubstituted oxindoles bearing two stereogenic centers are obtained in high yields and with high to excellent diastereo‐ and enantioselectivities.