METHOD FOR PRODUCING 1-SUBSTITUTED-3-FLUOROALKYL PYRAZOLE-4-CARBOXYLATE
    3.
    发明公开
    METHOD FOR PRODUCING 1-SUBSTITUTED-3-FLUOROALKYL PYRAZOLE-4-CARBOXYLATE 有权
    VERFAHREN ZUR HERSTELLUNG VON 1-SUBSTITUIERTEM PYRAZOL-4-CARBONSUREURE-3-FLUORALKYLESTER

    公开(公告)号:EP1854788A1

    公开(公告)日:2007-11-14

    申请号:EP06714409.7

    申请日:2006-02-23

    IPC分类号: C07D231/14

    CPC分类号: C07D231/14

    摘要: In a process for producing 1-substituted-3-fluoroalkyl-pyrazole-4-carboxylate (3) by a reaction of 2-alkoxymethylenefluoroacylacetate (1) and hydrazine (2), the reaction is conducted in the presence of a base and water, to produce 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (3) with high selectivity and yield. This novel process enables to produce 1-substituted-3-fluoroalkylpyrazole-4-carboxylate (3), which is useful as an intermediate for pharmaceuticals and agrochemicals, with high selectivity and yield by simple and safe operations.

    摘要翻译: 在通过2-烷氧基甲基三氟酰基乙酸酯(1)和肼(2)的反应制备1-取代-3-氟烷基 - 吡唑-4-羧酸酯(3)的方法中,反应在碱和水的存在下进行, 以高选择性和产率制备1-取代-3-氟代烷基吡唑-4-羧酸酯(3)。 该新方法能够通过简单和安全的操作产生具有高选择性和产率的1-取代-3-氟烷基吡唑-4-羧酸酯(3),其可用作药物和农用化学品的中间体。