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介绍了由硝基苯经溴化、还原生成间溴苯胺,再经5步反应合成常山酮中间体6-氯-7溴-4(3H)喹唑啉酮的方法,收率以间溴硝基苯计为13.60％,
The method for the synthesis of 6-chloro-7-bromo-4 (3H) quinazolinone, a intermediate of norbendanone by the reaction of bromination and reduction of nitrobenzene with bromophenylamine in 5 steps, was introduced. Benzene as 13.60%