Process for Preparing 4-Acetyl-2,3,4,5-tetrahydro-benzo[1,4]diazepine and the Intermediates Thereof
申请人:Zhu Fuqiang
公开号:US20100256358A1
公开(公告)日:2010-10-07
The present invention relates to a process for preparing 4-acetyl-2,3,4,5-tetrahydro-benzo[1,4]diazepine and the intermediates thereof. The present invention provides a compound represented by formula I and a compound represented by formula II, and processes for preparing 4-acetyl-2,3,4,5-tetrahydro-benzo[1,4]diazepine by using the compound represented by formula I, the compound represented by formula II and o-nitrobenzaldehyde. The invention has the advantages of the shorter synthesis steps, easily available raw materials and simple operation. Moreover, the process is economic and safe by avoiding the use of expensive and dangerous lithium aluminum hydride.
本发明涉及一种制备4-乙酰基-2,3,4,5-四氢苯并[1,4]二氮杂环及其中间体的方法。本发明提供了一种由式I和式II代表的化合物以及使用该化合物,式II代表的化合物和o-硝基苯甲醛制备4-乙酰基-2,3,4,5-四氢苯并[1,4]二氮杂环的方法。该发明具有合成步骤短,原料易得,操作简单的优点。此外,避免使用昂贵和危险的氢化铝锂,该过程经济且安全。