[EN] PROCESS FOR THE PREPARATION OF SUBSTITUTED ARYL PYRAZOLES<br/>[FR] PROCEDE POUR LA PREPARATION D'ARYLPYRAZOLES SUBSTITUES
申请人:PFIZER LTD
公开号:WO2005023773A1
公开(公告)日:2005-03-17
The present invention relates to a process for the preparation of pesticidal compounds, and more particularly to the preparation of pyrazole compounds. In particular, the present invention relates to a process for preparing 1-arylpyrazoles and 1-pyridylpyrazoles which have pesticidal activity. More particularly, the present invention relates to a novel process by which 3,4,5trisubstituted 1-arylpyrazoles may be produced directly in a reaction which involves coupling of an aryldiazonium species with an appropriately substituted precursor bearing a desired substituent.
本发明涉及一种制备杀虫化合物的过程,更具体地涉及吡唑化合物的制备。具体来说,本发明涉及一种制备具有杀虫活性的1-芳基吡唑和1-吡啶基吡唑的过程。更具体地说,本发明涉及一种新颖的过程,通过该过程可以直接在涉及芳基重氮离子物种与带有所需取代基的适当取代前体之间的偶联反应中直接制备3,4,5-三取代的1-芳基吡唑。