Synthesis of Benzodiazepines Through Ring Opening/Ring Closure of Benzimidazole Salts
作者:Sheng Tao、Qingqing Bu、Qianqian Shi、Donghui Wei、Bin Dai、Ning Liu
DOI:10.1002/chem.201905828
日期:2020.3.12
construction of the benzodiazepine ring derivatives are based on the condensation reactions of two highly functionalized synthons. The development of synthesis for these compounds, however, is hampered by the regioselectivity and atom economy. In this work, a one‐step synthesis of pyrido‐benzodiazepine backbones and its analogues is achieved through continuous ring‐opening hydrolysis of benzimidazole salts