反应详情

In the manner given in Example 2, 7-chloro-[(5H-dibenzo[b,e][1,4]diazepin-11-yl)amino]acetaldehyde dimethyl acetal is treated with concentrated sulfuric acid to give 7-chloro-9H-dibenzo[b,f]imidazo[1,2-d][1,4]diazepine.