发明授权
- 专利标题： Process for the preparation of pyrazoles
- 专利标题（中）： 制备吡唑的方法
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申请号： US11577511申请日： 2005-10-19
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公开(公告)号： US07678924B2公开(公告)日： 2010-03-16
- 发明人: Harald Walter , Camilla Corsi , Josef Ehrenfreund , Clemens Lamberth , Hans Tobler
- 申请人： Harald Walter , Camilla Corsi , Josef Ehrenfreund , Clemens Lamberth , Hans Tobler
- 申请人地址： US NC Greensboro
- 专利权人： Syngenta Crop Protection, Inc.
- 当前专利权人： Syngenta Crop Protection, Inc.
- 当前专利权人地址： US NC Greensboro
- 代理商 William F. Mulholland, II
- 优先权： CH1750/04 20041021
- 国际申请： PCT/EP2005/011232 WO 20051019
- 国际公布： WO2006/045504 WO 20060504
- 主分类号： C07D231/10
- IPC分类号： C07D231/10
摘要：
The present invention relates to a process for the preparation of compounds of formula I wherein R1 is C1-C4haloalkyl; R2 is C1-C6alkyl and R3 is methyl or ethyl, by reaction of compounds of formula II wherein the substituents are as defined for formula I, with compounds of formula III wherein R3 is as defined for formula I and n is 0 or 1.
公开/授权文献
- US20090069572A1 PROCESS FOR THE PREPARATION OF PYRAZOLES 公开/授权日：2009-03-12
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