Abstract

AbstractA range of polysubstituted indolenines (3H‐indoles) smoothly underwent an L‐proline‐catalyzed enantioselective Mannich reaction with various ketones in a highly regioselective manner to give structurally diverse 2‐acylmethylindolines in good yields with excellent ee. The current study provides a powerful approach for the transformation of unactivated five‐membered cyclic aldimines into optically active nitrogen‐containing heterocycles with high enantioselectivity.

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