Copper-Catalyzed B(dan)-Installing Carboboration of Alkenes.

Carboboration of alkenes was found to occur readily with an unsymmetrical diboron [(pin)B-B(dan)] and alkyl halides under copper catalysis, leading to the direct formation of protected alkylboron compounds via synchronous C-C and C-B bond-forming processes. The B(dan) moiety was solely installed into the organic frameworks with the regioselective attachment to a terminal carbon of alkenes employed.