PROCESS FOR PREPARING PYRAZOLES
    4.
    发明公开
    PROCESS FOR PREPARING PYRAZOLES 审中-公开
    制备吡唑的方法

    公开(公告)号:EP3174858A1

    公开(公告)日:2017-06-07

    申请号:EP15750664.3

    申请日:2015-07-30

    Applicant: BASF SE

    CPC classification number: C07D231/14 C07D401/12 C07D403/12 C07D405/06

    Abstract: The present invention relates to a process for preparing a pyrazole compound of formula V, the process including cyclizing a hydrazone substituted α,β-unsaturated carbonyl compound of formula IV by reacting it with a suitable reagent, e.g. a reducing agent, an organometallic reagent or a nucleophilic reagent. The compounds of formula V are versatile reaction tools for the preparation of pyrazole derived fine chemicals. The present invention also relates to pyrazole compounds of formulae Va, Vb, Vc, and VI.

    Abstract translation: 本发明涉及制备式V的吡唑化合物的方法,该方法包括通过使式IV的腙取代的α,β-不饱和羰基化合物与合适的试剂例如环己烷反应来环化。 还原剂,有机金属试剂或亲核试剂。 式V化合物是用于制备吡唑衍生的精细化学品的通用反应工具。 本发明还涉及式Va,Vb,Vc和VI的吡唑化合物。

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