Method for producing 4-(heteroaryl-methyl)-halogen-1(2H)-phthalazinones
    1.
    发明授权
    Method for producing 4-(heteroaryl-methyl)-halogen-1(2H)-phthalazinones 失效
    4-(杂芳基 - 甲基) - 卤素-1(2H) - 酞嗪酮的制备方法

    公开(公告)号:US06891041B2

    公开(公告)日:2005-05-10

    申请号:US10168794

    申请日:2000-12-20

    IPC分类号: C07D401/06 C07D403/06

    CPC分类号: C07D401/06

    摘要: A process for the production of 4-(heteroaryl-methyl)-halogen-1(2H)-phthalazinones, especially 4-(4-pyridylmethyl)-1(2H)-phthalazinone, is described, which is characterized by the reaction of phthalidyl-3-triphenylphosphonium salt with 4-pyridine aldehyde in the presence of a basic adjuvant, subsequent reaction with hydrazine hydrate and subsequent acid treatment, whereby this process avoids the technical safety and environmental problems of the known processes.

    摘要翻译: 描述了制备4-(杂芳基 - 甲基) - 卤素-1(2H) - 酞嗪酮,特别是4-(4-吡啶基甲基)-1(2H) - 酞嗪酮的方法,其特征在于苯酞 -3-三苯基鏻盐与4-吡啶醛在碱性助剂的存在下反应,随后与水合肼反应并随后进行酸处理,由此该方法避免了已知方法的技术安全性和环境问题。