FIPRONIL PRODUCTION PROCESS
    4.
    发明申请
    FIPRONIL PRODUCTION PROCESS 审中-公开
    FIPRONIL生产工艺

    公开(公告)号:US20150099892A1

    公开(公告)日:2015-04-09

    申请号:US14485508

    申请日:2014-09-12

    IPC分类号: C07D231/44

    CPC分类号: C07D231/44

    摘要: An improved oxidation process for preparing 5-amino-3-cyano-1-(2,6-dichloro-9-trifluoromethylphenyl)-4-trifluoromethylsulphinyl-pyrazole, of formula (I) is described. The process includes admixing 5-amino-3-cyano-1-(2,6-dichloro-4-trifluoromethylphenyl)-4-trifluoromethylthiopyrazole of formula (II) with dichloroacetic acid and hydrogen peroxide in the presence of a strong acid.

    摘要翻译: 描述了用于制备式(I)的5-氨基-3-氰基-1-(2,6-二氯-9-三氟甲基苯基)-4-三氟甲基亚磺酰基 - 吡唑的改进的氧化方法。 该方法包括在强酸存在下将式(II)的5-氨基-3-氰基-1-(2,6-二氯-4-三氟甲基苯基)-4-三氟甲硫基吡唑与二氯乙酸和过氧化氢混合。