Construction of Chiral All‐Carbon Quaternary Stereocenters by Asymmetric Friedel−Crafts Reaction of Isatin Derivatives.

Comprehensive Summary: Under the catalysis of chiral Cu(II) complex, C2 and C3 alkylation of pyrrole and C3 alkylation of indole were realized simultaneously. The chiral oxindole skeleton with an all‐carbon quaternary stereogenic center at the C3‐position could be obtained exclusively with high yields (up to 95%) and excellent enantioselectivities (up to > 99%). [ABSTRACT FROM AUTHOR]