发明授权
US08350053B2 Process for the regioselective preparation of 1-alkyl-3-haloalkylpyrazole-4-carboxylic acid derivatives
有权
1-烷基-3-卤代烷基吡唑-4-羧酸衍生物的区域选择性制备方法
- 专利标题: Process for the regioselective preparation of 1-alkyl-3-haloalkylpyrazole-4-carboxylic acid derivatives
- 专利标题(中): 1-烷基-3-卤代烷基吡唑-4-羧酸衍生物的区域选择性制备方法
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申请号: US12921719申请日: 2009-02-26
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公开(公告)号: US08350053B2公开(公告)日: 2013-01-08
- 发明人: Sergii Pazenok , Norbert Lui , Arnd Neeff
- 申请人: Sergii Pazenok , Norbert Lui , Arnd Neeff
- 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: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- 优先权: EP08152532 20080310
- 国际申请: PCT/EP2009/001354 WO 20090226
- 国际公布: WO2009/112157 WO 20090917
- 主分类号: C07D231/10
- IPC分类号: C07D231/10
摘要:
The present invention relates to a process for the regioselective synthesis of 1-alkyl-3-halo-alkylpyrazole-4-carboxylic acid derivatives by cyclization of 2,3-disubstituted acrylic acid derivatives with hydrazines in the presence of carbonyl compounds.
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