发明授权
- 专利标题： Method of preparing 1-amino-2, 6-dimethylpiperidine
- 专利标题（中）： 1-氨基-2,6-二甲基哌啶的制备方法
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申请号： US244142申请日： 1994-05-17
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公开(公告)号： US5510489A公开(公告)日： 1996-04-23
- 发明人: Wolfgang Rybczynski , Wolfgang Bauer , Eckard Kujath , Manfred Schrod
- 申请人： Wolfgang Rybczynski , Wolfgang Bauer , Eckard Kujath , Manfred Schrod
- 申请人地址： DEX Frankfurt am Main
- 专利权人： Cassella Aktiengesellschaft
- 当前专利权人： Cassella Aktiengesellschaft
- 当前专利权人地址： DEX Frankfurt am Main
- 优先权： DEX4138143.2 19911120
- 主分类号： B01J23/89
- IPC分类号： B01J23/89 ; C07B61/00 ; C07D211/98 ; C07D295/30
摘要：
The present invention relates to improved processes for the preparation of 1-amino-2,6-dimethylpiperidine whereby the yield is more than 90%. The processes involve the hydrogenation of 1-nitroso-2,6-dimethylpiperidine in the presence of a palladium catalyst which is partly poisoned with iron ions, in an aqueous solvent, and are characterized by the inclusion of at least one surfactant. The surfactant preferably is anionic or nonionic.