1-苄基哌嗪 、
4,9-dihydro-3-methyl-4-(prop-2-ynyl)-10H-thieno[3,4-b][1,5]benzodiazepin-10-one 在
copper(l) chloride paraformaldehyde 作用下,
以12%的产率得到4,9-Dihydro-3-methyl-4-[6-[4-(phenylmethyl)-1-piperazinyl]-hex-4-ynyl]-10H-thieno[3,4-b][1,5]benzodiazepin-10-one