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Asymmetric dearomatization of pyrroles has been accomplished by using Ir-catalyzed intramolecular asymmetric allylic alkylation reactions. Reactions of allylic carbonate tethered pyrroles in the presence of Ir(cod)Cl2 and a BINOL-derived phosphoramidite ligand lead to efficient generation of spiro-2H-pyrrole derivatives with up to 96% ee.
Zhuo et al. (Mon,) studied this question.