Regioselective Iodine-Catalyzed Construction of Polysubstituted Pyrroles from Allenes and Enamines

A novel I2-catalyzed tandem Michael addition/oxidative annulation of allenes and enamines for the construction of polysubstituted pyrroles has been developed. This protocol represents an efficient and highly regioselective way to access functionalized pyrroles in moderate to excellent yields under mild conditions.