发明名称 |
PROCESS FOR PREPARING 4-TRIFLUOROMETHYLSULPHINYLPYRAZOLE DERIVATIVE |
摘要 |
<p>A process for the preparation of a compound of formula (I)comprising oxidizing a compound of formula (II)with trifluoroperacetic acid in the presence of a corrosion inhibiting compound such as boric acid. Also, a process for preparing a compound of formula (II) by adding sulfur dioxide to a mixture of the corresponding disulfide, a formate salt, trifluoromethyl bromide and a polar solvent; and a process for preparing the disulfide comprising adding S2Cl2 to a solution, in an organic solvent, of the corresponding 4-unsubstituted pyrazole.</p> |
申请公布号 |
EP1222173(B1) |
申请公布日期 |
2004.08.18 |
申请号 |
EP19990955978 |
申请日期 |
1999.10.22 |
申请人 |
BAYER CROPSCIENCE S.A. |
发明人 |
CLAVEL, JEAN-LOUIS;PELTA, ISABELLE;LE BARS, SYLVIE;CHARREAU, PHILIPPE |
分类号 |
C07D231/38;C07D;C07D231/44;C07D401/04;G01G11/14;(IPC1-7):C07D231/44 |
主分类号 |
C07D231/38 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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