发明授权
- 专利标题： Process for preparing 2-chloro-benzimidazole derivatives
- 专利标题（中）： 2-氯 - 苯并咪唑衍生物的制备方法
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申请号： US307591申请日： 1999-05-07
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公开(公告)号： US6028200A公开(公告)日： 2000-02-22
- 发明人: Michael Conrad , Lutz Assmann , Heinz-Jurgen Wroblowsky , Carl Casser , Dietmar Bielefeldt
- 申请人： Michael Conrad , Lutz Assmann , Heinz-Jurgen Wroblowsky , Carl Casser , Dietmar Bielefeldt
- 申请人地址： DEX Leverkusen
- 专利权人： Bayer Aktiengesellschaft
- 当前专利权人： Bayer Aktiengesellschaft
- 当前专利权人地址： DEX Leverkusen
- 优先权： DEX19731799 19970722; DEX19745692 19971016
- 主分类号： B01J27/06
- IPC分类号： B01J27/06 ; B01J27/14 ; C07B61/00 ; C07D491/04 ; C07D491/056 ; C07D235/02
摘要：
A novel process for the preparation of 2-chloro-benzimidazole derivatives of the formula in whichA represents optionally halogenated alkylene having 1 or 2 carbon atoms,which process comprises reacting 1,3-dihydro-benzimidazol(ethi)ones of the formula ##STR1## in which X represents oxygen or sulphur,with phosphorus oxychloride.Novel 1,3-dihydro-benzimidazol(ethi)ones of the formula (II) and processes for their preparation.
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