Process for the preparation of 2-methylthiazole-5-carboxylates
    2.
    发明授权
    Process for the preparation of 2-methylthiazole-5-carboxylates 失效
    2-甲基噻唑-5-羧酸酯的制备方法

    公开(公告)号:US5880288A

    公开(公告)日:1999-03-09

    申请号:US927981

    申请日:1992-08-11

    IPC分类号: C07D277/56 C07D277/04

    CPC分类号: C07D277/56

    摘要: An improved process for the preparation of alkyl 4-halomethyl -2-methylthiazole-5-carboxylate comprising contacting a solution of alkyl 4-(halo)-2-chloroacetoacetate in acetonitrile with thioacetamide in the presence of an amine, such as triethylamine.

    摘要翻译: 一种制备4-卤代甲基-2-甲基噻唑-5-羧酸烷基的改进方法,包括使4-(卤代)-2-氯代乙酰乙酸烷基酯在乙腈中的溶液与硫代乙酰胺在胺如三乙胺存在下接触。