ChemInform Abstract: 3-Pyrrolyl-Oxindoles as Efficient Nucleophiles for Organocatalytic Asymmetric Synthesis of Structurally Diverse 3,3′-Disubstituted Oxindole Derivatives.

A squaramide-substituted cinchona alkaloid is successfully applied as catalyst for the synthesis of chiral oxindoles such as (III) and (V) by Michael addition of 3-pyrrolyloxindoles with nitroalkenes. [ABSTRACT FROM AUTHOR]