Rhodium-Catalyzed Dynamic Kinetic Asymmetric Transformations of Racemic Allenes by the [3+2] Annulation of Aryl Ketimines

Racemization required: Rhodium(I)‐catalyzed CH activation directed by unprotected ketimines initiates selective [3+2] cycloaddition with allenes, providing access to highly substituted indenylamines. The reaction proceeds through the dynamic kinetic asymmetric transformation of racemic allenes. The catalyst controls the enantio‐ and diastereoselectivity, the regioselectivities of the CH activation and allene incorporation, as well as the E/Z ratio.