Visible-light-promoted nickel-catalyzed cross-coupling of B-iodocarboranes with styrenes.

A visible-light-promoted, nickel-catalyzed cross-coupling reaction of B-iodocarboranes with styrenes has been developed, enabling efficient and site-divergent alkenylation of carboranes under mild conditions. The reaction exhibits broad substrate scope, accommodating a wide range of styrene derivatives bearing various electronic and steric properties, as well as ethylene, to afford the corresponding alkenylated products in good to excellent yields. This work provides a practical and sustainable approach for carborane functionalization under ambient conditions and expands the synthetic utility of carboranyl radicals in transition metal-catalyzed Heck-type cross-coupling reactions.