Journal of the American Chemical Society, Vol.136, No.24, 8520-8523, 2014
Asymmetric Synthesis of alpha-Branched Amines via Rh(III)-Catalyzed C-H Bond Functionalization
The first asymmetric intermolecular addition of non-acidic C-H bonds to imines is reported. The use of the activating N-perfluorobutanesulfinyl imine substituent is essential for achieving sufficient reactivity and provides outstanding diastereoselectivity (>98:2 dr). Straightforward removal of the sulfinyl group with HCl yields the highly enantiomerically enriched amine hydrochlorides.