发明名称 |
Processes for the preparation of pyrazole compounds |
摘要 |
A process (1) for the preparation of 4-cyanoacetylpyrazoles of the general formula (I) wherein R<1 >is C1-6 alkyl, R<2 >is C1-6 alkyl or C1-6 haloalkyl, and X is hydrogen or C1-6 alkyl which comprises using a pyrazolecarboxylic acid halide and a cyanoacetate ester; a process (2) for the preparation of the same which comprises using a pyrazolecarboxylic acid and a cyanoacetate ester; a process (3) for the preparation of the same which comprises using a pyrazolecarbonitrile; and a process (4) for the preparation of the same which comprises using a haloacetylpyrazole. Furthermore, an industrially advantageous process for preparing pyrazolecarboxylic acids useful as intermediates in the above processes.
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申请公布号 |
US2004019221(A1) |
申请公布日期 |
2004.01.29 |
申请号 |
US20030344061 |
申请日期 |
2003.02.06 |
申请人 |
YAGIHARA TOMIO;IMAGAWA TSUTOMU;SUGA SHIGEMI;HATANO MASAMI;SHIBATA YASUSHI;OOKUCHI TETSUSHI;KASAHARA ISAMU |
发明人 |
YAGIHARA TOMIO;IMAGAWA TSUTOMU;SUGA SHIGEMI;HATANO MASAMI;SHIBATA YASUSHI;OOKUCHI TETSUSHI;KASAHARA ISAMU |
分类号 |
C07D231/12;C07D231/14;C07D231/16;(IPC1-7):C07D231/12 |
主分类号 |
C07D231/12 |
代理机构 |
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地址 |
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