Method for producing 1,2-disubstituted imidazole
    24.
    发明专利
    Method for producing 1,2-disubstituted imidazole 有权
    生产1,2-取代的咪唑的方法

    公开(公告)号:JP2007302641A

    公开(公告)日:2007-11-22

    申请号:JP2006135219

    申请日:2006-05-15

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a 1,2-disubstituted imidazole, with which formations of 1-position substituted and 2-position substituted imidazoles among by-products are controlled. SOLUTION: The method for producing a 1,2-disubstituted imidazole comprises reacting a reaction solution containing ammonia and a primary amine with an aldehyde compound and glyoxal. (1) The reaction solution is reacted with a part of the aldehyde compound to carry out a first-stage reaction, then the reaction system is reacted with the remaining aldehyde compound and glyoxal to carry out a second-stage reaction. Otherwise, (2) the reaction solution is mixed with a part of the aldehyde compound and a part of the glyoxal to carry out a first-stage reaction at 0-50°C and then the reaction system is mixed with the remaining aldehyde compound and the remaining glyoxal to carry out a second-stage reaction at a temperature 10-50°C higher than that of the first-stage reaction. COPYRIGHT: (C)2008,JPO&INPIT

    Abstract translation: 待解决的问题:提供一种1,2-二取代咪唑的制备方法,其中控制副产物中1位取代的和2-位取代的咪唑的形成。 解决方案:1,2-二取代咪唑的制备方法包括使含氨和伯胺的反应溶液与醛化合物和乙二醛反应。 (1)使反应溶液与一部分醛化合物反应进行第一阶段反应,然后使反应体系与剩余的醛化合物和乙二醛反应进行第二阶段反应。 否则,(2)将反应溶液与一部分醛化合物和一部分乙二醛混合,在0-50℃下进行第一阶段反应,然后将反应体系与剩余的醛化合物和 剩余的乙二醛在比第一阶段反应高10-50℃的温度下进行第二阶段反应。 版权所有(C)2008,JPO&INPIT

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