Regio- and Stereoselective Cobalt-Catalyzed Hydroboration of Vinylcyclopropanes to Access Homoallylic Boronates

Herein, a cobalt-catalyzed hydroboration of vinylcyclopropanes was reported to access the corresponding homoallylic boronates with excellent regio- and stereoselectivity. This reaction features a broad substrate scope and could be carried out on a gram scale. The possible mechanism and models for selectivity have been proposed.