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    • 73. 发明专利
    • Method for producing derivative of acrylic acid
    • 生产丙烯酸衍生物的方法
    • JP2003277316A
    • 2003-10-02
    • JP2002077502
    • 2002-03-20
    • Mitsui Chemicals Inc三井化学株式会社
    • ENOMOTO TSUYOSHIKOTANI MAKOTO
    • C07D213/55C07C51/353C07C51/38C07C51/43C07C57/60
    • PROBLEM TO BE SOLVED: To provide an industrially profitable method for producing a derivative of acrylic acid with good yield.
      SOLUTION: The method produces the objective substance in good yield, in producing the derivative of acrylic acid (II) from an aldehyde (I) and malonic acid in the presence of a base by carrying out the reaction in an aprotic polar solvent not using pyridine solvent which is hardly recovered as a conventional method. The objective substance is inexpensively obtained in good yield with high purity from filtration of precipitated product by mixing water that is a poor solvent, to the reaction liquid to crystallize the product after distilling away low boiling fractions than the reaction solvent.
      COPYRIGHT: (C)2004,JPO
    • 待解决的问题:提供一种以良好产率生产丙烯酸衍生物的工业利润方法。 解决方案:该方法以良好的产率产生目标物质,在碱存在下由醛(I)和丙二酸生成丙烯酸(II)的衍生物,通过在非质子极性溶剂中进行反应 不使用常规方法难以回收的吡啶溶剂。 通过将不良溶剂的水混合到反应液中使沉淀的产物过滤,使得产物在蒸出低于反应溶剂的低沸点馏分之后使产物过滤,从而以高纯度廉价地获得目标物质。 版权所有(C)2004,JPO