Improved Preparation of the Key Intermediate N-Toluenesulfonyl Benzodiazepine-5-ketone Used for Conivaptan Hydrochloride Synthesis
MA Yajuan1, LI Xiaodong2, LI Yun1, HONG Bo1, ZHOU Miping1*
Chinese Journal of Applied Chemistry . 2014, (01): 50 -53 .  DOI: 10.3724/SP.J.1095.2013.30007