ChemInform Abstract: Core-Structure-Oriented Asymmetric Organocatalytic Substitution of 3-Hydroxyoxindoles: Application in the Enantioselective Total Synthesis of (+)-Folicanthine.

The title reaction of 3,3′-bisindolin-2-ones with vinylcarbamates catalyzed by a chiral phosphoric acid affords the corresponding indolinones with concomitant generation of an all-carbon quaternary stereogenic center in high yield and excellent enantioselectivity. [ABSTRACT FROM AUTHOR]