发明申请
US20120215008A1 Process for the Preparation of 4-Sulfinyl-Pyrazole Derivatives
失效
4-亚磺酰基 - 吡唑衍生物的制备方法
- 专利标题： Process for the Preparation of 4-Sulfinyl-Pyrazole Derivatives
- 专利标题（中）： 4-亚磺酰基 - 吡唑衍生物的制备方法
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申请号： US13504574申请日： 2010-10-26
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公开(公告)号： US20120215008A1公开(公告)日： 2012-08-23
- 发明人: Alexander Korte , Paul Hornung
- 申请人： Alexander Korte , Paul Hornung
- 申请人地址： DE Ludwigshsafen
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： DE Ludwigshsafen
- 优先权： EP09174558.8 20091030
- 国际申请： PCT/EP10/66162 WO 20101026
- 主分类号： C07D231/44
- IPC分类号： C07D231/44
摘要：
The present invention relates to a novel process for the preparation of a compound of formula (I), wherein R1, R2, R3, R4 and R5 are each independently selected from hydrogen, halogen, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-haloalkoxy, nitro, cyano, and pentafluorothio; R6 is C1-C4-alkyl, or C1-C4-haloalkyl; by oxidation of a compound of formula (II) with an oxidation agent selected from trifluoroperacetic acid and trichloroperacetic acid in the presence of a catalyst selected from hydroxides, oxides, sulfates, acetates or trifluoroacetates of lithium, magnesium, calcium, strontium, barium, titanium (IV), zinc (II) and manganese (II).
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