Process for the production of 4-alkylpyrimidine
    7.
    发明授权
    Process for the production of 4-alkylpyrimidine 失效
    4-烷基嘧啶的制备方法

    公开(公告)号:US07179914B2

    公开(公告)日:2007-02-20

    申请号:US10778254

    申请日:2004-02-17

    IPC分类号: C07D239/26

    CPC分类号: C07D239/26

    摘要: 4-alkylpyrimidine is produced by reacting formamide with a formyl methyl alkyl ketone diacetal without the addition of water at a temperature that allows removal of the 4-alkylpyrimidine from the reaction mixture by distillation. The process is readily applicable on an industrial scale and succeeds without the addition of water or ammonium chloride as a catalyst and permits the production of 4-alkylpyrimidine in good yields and excellent purities without time-consuming extraction steps.

    摘要翻译: 4-甲基嘧啶是通过甲酰胺与甲酰基甲基烷基酮二缩醛反应生成的,而不需要在允许通过蒸馏从反应混合物中除去4-烷基嘧啶的温度下加入水。 该方法容易适用于工业规模,成功而不添加水或氯化铵作为催化剂,并且允许以良好的产率和优异的纯度生产4-烷基嘧啶,而无需耗时的萃取步骤。