for the following products
3-[4-(tert-Butoxycarbonyl)piperazin-1-yl]phenylboronic acid pinacol ester | tert-Butyl 4-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]piperazine-1-carboxylate and 3-[4-(N-Boc)piperazin-1-yl]phenylboronic acid pinacol ester
