The present invention provides a process for producing an amic acid ester represented by the following general formula (7) (wherein A is substituted or unsubstituted lower alkylene or the like; R1 is substituted or unsubstituted lower alkyl or the like; and R3 is hydrogen or lower alkyl), which process comprises reacting, in the presence of water, an amino acid represented by formula (1) with a halogenated carbonic acid ester represented by formula (2) (wherein X is halogen) to form an amide compound represented by formula (3), then reacting the amide compound with a halogenated carbonic acid ester represented by formula (4) (wherein R2 is substituted or unsubstituted lower alkyl or the like; and X is halogen) to form, in the system, a mixed acid anhydride represented by formula (5), and reacting the mixed acid anhydride with an amine compound represented by formula (6) (wherein Het is substituted or unsubstituted heterocyclic).
本发明提供一种制备以下一般式(7)所代表的酰胺酸酯的方法(其中A是取代或未取代的低碳链或类似物;R1是取代或未取代的低烷基或类似物;R3是氢或低烷基),该方法包括在
水的存在下,将以下一般式(1)所代表的
氨基酸与以下一般式(2)所代表的卤代
碳酸酯(其中X是卤素)反应生成以下一般式(3)所代表的酰胺化合物,然后将该酰胺化合物与以下一般式(4)所代表的卤代
碳酸酯(其中R2是取代或未取代的低烷基或类似物;X是卤素)在体系中反应生成以下一般式(5)所代表的混合酸酐,然后将该混合酸酐与以下一般式(6)所代表的胺化合物(其中Het是取代或未取代的杂环)反应。