Production process and intermediate of tetrazole compound
    1.
    发明授权
    Production process and intermediate of tetrazole compound 失效
    四唑化合物的生产工艺和中间体

    公开(公告)号:US06191289B1

    公开(公告)日:2001-02-20

    申请号:US09176198

    申请日:1998-10-21

    IPC分类号: C07D25704

    摘要: There are disclosed an industrially favorable process for producing a tetrazole compound of general formula (1): characterized in that a nitrile of general formula (2): R1CN  (2) is reacted with hydrazine or a salt thereof in the presence of a catalyst, followed by reaction with a nitrous acid compound of general formula (3): ANO2  (3) or a nitrile of general formula (2) is reacted with hydrogen sulfide, followed by reaction with an alkyl halide of general formula (4): R4J  (4) with hydrazine or a salt thereof, and then with a nitrous acid compound of general formula (3); and an intermediate of general formula (5): R1C(═R5)R6  (5) which is useful for the production of the tetrazole compound (in which R1 to R6, A and J in the above formulas are as defined in the specification).

    摘要翻译: 公开了用于制备通式(1)的四唑化合物的工业上有利的方法:其特征在于通式(2)的腈与肼或其盐在催化剂存在下反应,然后与 将通式(3)的亚硝酸化合物或通式(2)的腈与硫化氢反应,然后与通式(4)的烷基卤反应:与肼或其盐反应,然后与 通式(3)的亚硝酸化合物; 和通式(5)的中间体:其可用于制备四唑化合物(其中上述式中的R 1至R 6,A和J如说明书中所定义)。