Invention Application
US20170008852A1 METHOD FOR PREPARING 1-ALKYL-3-DIFLUOROMETHYL-5-FLUOR-1H-PYRAZOLE-4-CARBALDEHYDES AND 1-ALKYL-3-DIFLUOROMETHYL-5-FLUOR-1H-PYRAZOLE-4-CARBOXYLATES
有权
制备1-烷基-3-二氟甲基-5-氟-1,5-吡唑-4-碳胺和1-烷基-3-二氟甲基-5-氟-1,5-吡唑-4-羧酸的方法
- Patent Title: METHOD FOR PREPARING 1-ALKYL-3-DIFLUOROMETHYL-5-FLUOR-1H-PYRAZOLE-4-CARBALDEHYDES AND 1-ALKYL-3-DIFLUOROMETHYL-5-FLUOR-1H-PYRAZOLE-4-CARBOXYLATES
- Patent Title (中): 制备1-烷基-3-二氟甲基-5-氟-1,5-吡唑-4-碳胺和1-烷基-3-二氟甲基-5-氟-1,5-吡唑-4-羧酸的方法
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Application No.: US15113377Application Date: 2015-01-22
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Publication No.: US20170008852A1Publication Date: 2017-01-12
- Inventor: Norbert LUI , Sergii PAZENOK
- Applicant: BAYER CROPSCIENCE AKTIENGESELLSCHAFT
- Priority: EP14356001.9 20140124
- International Application: PCT/EP2015/051184 WO 20150122
- Main IPC: C07D231/16
- IPC: C07D231/16
Abstract:
The present invention relates to a novel method for preparing 1-alkyl-3-difluoromethyl-5-fluor-1H-pyrazole-4-carbaldehydes or esters thereof of formula (I) by means of reductive dehalogenation, starting from 1-alkyl-3-chlorodifluoromethyl-5-fluoro-1H-pyrazole-4-carbaldehydes or esters thereof Formula (I)
Public/Granted literature
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