Copper-Catalyzed B-H Bond Insertion Reaction: A Highly Efficient and Enantioselective C-B Bond-Forming Reaction with Amine-Borane and Phosphine-Borane Adducts

A copper-catalyzed B-H bond insertion reaction with amine- and phosphine-borane adducts was realized with high yield and enantioselectivity under mild reaction conditions. The B-H bond insertion reaction provides a new C-B bond-forming methodology and an efficient approach to chiral organoboron compounds.