发明授权
US07923571B2 Process for preparing substituted 2-alkoxycarbonyl-3-aminothiophenes
有权
取代的2-烷氧基羰基-3-氨基噻吩的制备方法
- 专利标题： Process for preparing substituted 2-alkoxycarbonyl-3-aminothiophenes
- 专利标题（中）： 取代的2-烷氧基羰基-3-氨基噻吩的制备方法
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申请号： US11722506申请日： 2005-12-14
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公开(公告)号： US07923571B2公开(公告)日： 2011-04-12
- 发明人: Thomas Geller
- 申请人： Thomas Geller
- 申请人地址： DE Monheim
- 专利权人： Bayer Cropscience AG
- 当前专利权人： Bayer Cropscience AG
- 当前专利权人地址： DE Monheim
- 代理机构： Baker Donelson Bearman, Caldwell & Berkowitz, PC
- 优先权： DE102004063191 20041229
- 国际申请： PCT/EP2005/013406 WO 20051214
- 国际公布： WO2006/072375 WO 20060713
- 主分类号： C07D333/36
- IPC分类号： C07D333/36
摘要：
The present invention relates to a process for preparing 4-alkoxycarbonyl-3-aminothiophenes of the general formula (I) and/or their hydrochlorides of the formula (I)′ in which R1 and R2 are each as defined in the description, and/or their mono- or bisacetylated or mono- or bisformylated form, by reacting enamines of the formula (II) in which R1 and R2 are each as defined in the description, and/or their mono- or bisacetylated or mono- or bisformylated form, with a chlorinating agent in the presence of one or more diluents, and also to a process for preparing the compounds of the formula (II).
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