Palladium catalyzed regioselective mono-alkenylation of o-carboranes via Heck type coupling reaction of a cage B–H bond†
Abstract
A regioselective mono-alkenylation of o-carboranes on B(8) and B(9) via palladium catalyzed Heck type coupling of a cage B–H bond has been developed, and kinds of B(8)/B(9)-alkenyl-o-carboranes decorated with active groups have been synthesized with moderate yield as well as good regioselectivity. A PdII catalyzed electrophilic B–H activation mechanism was also proposed.