Invention Grant
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
- Patent Title: Process for the regioselective preparation of 1-alkyl-3-haloalkylpyrazole-4-carboxylic acid derivatives
- Patent Title (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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Application No.: US12921719Application Date: 2009-02-26
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Publication No.: US08350053B2Publication Date: 2013-01-08
- Inventor: Sergii Pazenok , Norbert Lui , Arnd Neeff
- Applicant: Sergii Pazenok , Norbert Lui , Arnd Neeff
- Applicant Address: DE Monheim
- Assignee: Bayer CropScience AG
- Current Assignee: Bayer CropScience AG
- Current Assignee Address: DE Monheim
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Priority: EP08152532 20080310
- International Application: PCT/EP2009/001354 WO 20090226
- International Announcement: WO2009/112157 WO 20090917
- Main IPC: C07D231/10
- IPC: C07D231/10
Abstract:
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.
Public/Granted literature
- US20110028735A1 Process for the Regioselective Preparation of 1-Alkyl-3-haloalkylpyrazole-4-carboxylic Acid Derivatives Public/Granted day:2011-02-03
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