发明名称 |
Process for preparing 4-trifluoromethylsulfinylpyrazole derivative |
摘要 |
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 S<SUB>2</SUB>Cl<SUB>2 </SUB>to a solution, in an organic solvent, of the corresponding 4-unsubstituted pyrazole.
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申请公布号 |
US6881848(B2) |
申请公布日期 |
2005.04.19 |
申请号 |
US20030611979 |
申请日期 |
2003.07.03 |
申请人 |
BASF AGRO B.V. ARNHEM (NL), WAEDENSWIL-BRANCH |
发明人 |
CLAVEL JEAN-LOUIS;PELTA ISABELLE;LE BARS SYLVIE;CHARREAU PHILIPPE |
分类号 |
C07D231/38;C07D;C07D231/44;C07D401/04;(IPC1-7):C07D231/10 |
主分类号 |
C07D231/38 |
代理机构 |
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代理人 |
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