发明授权
- 专利标题: Method for producing lactams using oligophosphate catalysts
- 专利标题(中): 使用寡磷酸酯催化剂生产内酰胺的方法
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申请号: US09646153申请日: 2000-09-14
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公开(公告)号: US06407230B1公开(公告)日: 2002-06-18
- 发明人: Matthias Eiermann , Andreas Ansmann , Klemens Flick
- 申请人: Matthias Eiermann , Andreas Ansmann , Klemens Flick
- 优先权: DE19811880 19980318
- 主分类号: C07D20108
- IPC分类号: C07D20108
摘要:
A process for preparing lactams by hydrolytic cyclization of aminonitriles in the gas phase in the presence of a metal phosphate catalyst comprises using a catalyst comprising one or more oligophosphates of the general formula (I) M (POa)b (I) where M is a metal of group 3 or 4 of the periodic table, including the lanthanides, a is >2.5 and
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