Organocatalytic Asymmetric Michael Addition of Oxindoles to Nitroolefins for the Synthesis of 2,2-Disubstituted Oxindoles Bearing Adjacent Quaternary and Tertiary Stereocenters

Cheng-Yong Jin, Yao Wang, Yao-Zong Liu, Chao Shen, and Peng-Fei Xu*

https:// doi: 10.1021/jo301886j