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公开(公告)号:WO2008144981A1
公开(公告)日:2008-12-04
申请号:PCT/CN2007/070052
申请日:2007-05-25
IPC分类号: C07C205/06 , C07D243/14
CPC分类号: C07C211/29 , C07C209/52 , C07C233/13 , C07C251/24 , C07D243/14
摘要: The invention provides compounds of formula (I) and (II), and method for preparing 4-acetyl-2,3,4,5-tetrahydro-1H-1,4-benzodiazepine through intermediates of formula (I) and (II).
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公开(公告)号:WO2008145010A1
公开(公告)日:2008-12-04
申请号:PCT/CN2008/001001
申请日:2008-05-22
申请人: 上海特化医药科技有限公司 , 潍坊特化精细化工有限公司 , 朱富强 , 李海泓 , 王文忠 , 张慧 , 沈敬山
IPC分类号: C07C205/06 , C07D243/14
CPC分类号: C07C211/29 , C07C209/52 , C07C233/13 , C07C251/24 , C07D243/14
摘要: Preparation methods of 4-acetyl-2,3,4,5-tetrahydro-benzo[1,4]diazepine and their intermediates. Compounds represented by the formula I and II. The preparation methods of 4-acetyl-2,3,4,5-tetrahydro-benzo[1,4]diazepine in which compounds represented by the formula I and II and o-nitrobenzaldehyde are used. These methods are absolutely novel synthetic routes for preparation of 4-acetyl-2,3,4,5-tetrahydro -benzo[1,4] diazepine. The routes are short and easy to operate and raw materials are readily available. The routes are economical and safe without using costly and unsafe lithium aluminium hydride.
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