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1. 发明申请

WO1998003483A1 PROCESS FOR THE PREPARATION OF PIPERIDINES 审中-公开
标题翻译：制备哌啶的方法
公开(公告)号：WO1998003483A1
公开(公告)日：1998-01-29
申请号：PCT/JP1997002495
申请日：1997-07-18
申请人： KOEI CHEMICAL CO., LTD.
发明人： KOEI CHEMICAL CO., LTD. , HARADA, Katsutoshi
IPC分类号： C07D211/02
CPC分类号： C07D295/023 , C07D211/02
摘要： A process for the preparation of piperidines by catalytic reduction of pyridines, whereby the catalytic reduction of a pyridine can be completed even with a relatively small amount of a catalyst and the formation of by-products having boiling points near that of an objective piperidine can be inhibited to attain the preparation of the piperidine in a high yield, characterized by charging a pyridine and at least 2 % by weight (based on the pyridine) of a stabilized nickel catalyst into a pressure reactor and conducting the catalytic reduction of the pyridine under agitation at a reaction temperature of 140 to 250 DEG C under a hydrogen pressure kept at 30 to 100 kgf/cm (2.9 x 10 to 9.8 x 10 Pa) by introducing hydrogen into the reactor.
摘要翻译：通过吡啶的催化还原制备哌啶的方法，即使使用相对少量的催化剂也可以完成吡啶的催化还原，并且形成沸点接近目标哌啶的副产物可以是抑制以高产率制备哌啶，其特征在于将吡啶和至少2重量％（基于吡啶）的稳定的镍催化剂装入压力反应器中并在搅拌下进行催化还原吡啶在140〜250℃的反应温度下，通过将氢气引入反应器中，在氢气压力保持在30〜100kgf / cm 2（2.9×10 6〜9.8×10 6 Pa）的条件下进行。

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