tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxa-borolan-2-yl)phenylsulfonyl)piperidine-1-carboxylate 5g

tert-Butyl 4-(4-(4,4,5,5-tetramethyl-1,3,2-dioxa-borolan-2-yl)phenylsulfonyl)piperidine-1-carboxylate 5g