PROCESS FOR THE PREPARATION OF 4-SULFINYL-PYRAZOLE DERIVATIVES
    10.
    发明公开
    PROCESS FOR THE PREPARATION OF 4-SULFINYL-PYRAZOLE DERIVATIVES 有权
    PROCESS FOR PRODUCING 4 - 亚磺酰基吡唑衍生物

    公开(公告)号:EP2493860A1

    公开(公告)日:2012-09-05

    申请号:EP10773615.9

    申请日:2010-10-26

    申请人: BASF SE

    IPC分类号: C07D231/44

    CPC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 R
    1 , R
    2 , R
    3 , R
    4 and R
    5 are each independently selected from hydrogen, halogen, C
    1 -C
    4 -alkyl, C
    1 -C
    4 -haloalkyl, C
    1 -C
    4 -alkoxy, C
    1 -C
    4 -haloalkoxy, nitro, cyano, and pentafluorothio; R
    6 is C
    1 -C
    4 -alkyl, or C
    1 -C
    4 -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).