发明授权
- 专利标题： Process for producing 3-chloro-5-trifluoromethylpyridines
- 专利标题（中）： 3-氯-5-三氟甲基吡啶的制备方法
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申请号： US434368申请日： 1982-10-14
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公开(公告)号： US4490534A公开(公告)日： 1984-12-25
- 发明人: Kanichi Fujikawa , Yasuhiro Tsujii , Itaru Shigehara , Tatsuo Isogai , Hiroshi Yoshizawa , Mikio Miyaji
- 申请人： Kanichi Fujikawa , Yasuhiro Tsujii , Itaru Shigehara , Tatsuo Isogai , Hiroshi Yoshizawa , Mikio Miyaji
- 申请人地址： JPX Osaka
- 专利权人： Ishihara Sangyo Kaisha Ltd.
- 当前专利权人： Ishihara Sangyo Kaisha Ltd.
- 当前专利权人地址： JPX Osaka
- 优先权： JPX56-176759 19811104
- 主分类号： C07D213/61
- IPC分类号： C07D213/61 ; C07D211/72 ; C07D211/84
摘要：
A process for producing a 3-chloro-5-trifluoromethylpyridine derivative comprises reacting a 5-trifluoromethylpyridine derivative having a hydrogen atom at 3-position with chlorine. The process is characterized by reacting said 5-trifluoromethylpyridine derivative with chlorine in a vapor phase in the presence of a catalyst selected from the group consisting of activated carbon and a chloride of a metal element selected from the group consisting of iron, antimony, copper and zinc.
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