A carboxamide can be produced in a high yield by a method for producing a carboxamide, for example, represented by formula (4):
(wherein R1 and R3 are as defined below), the method comprising a step of allowing a carboxylic acid ester represented by formula (1):
(wherein R1 represents an optionally substituented C1-C20 hydrocarbon group or an optionally substituented C3-C20 heterocyclic group, and R2 represents an optionally substituented C1-C20 hydrocarbon group), an amine represented by formula (2):
R3—NH2 (2)
(wherein R3 represents a hydrogen atom or an optionally substituented C1-C20 hydrocarbon group), and a formamide compound represented by formula (3):
(wherein R3 is as defined above) to react in the presence of a metal alkoxide.
一种制备羧酰胺的方法可以高产率地制备羧酰胺,例如,由式(4)表示的方法:(其中R1和R3如下定义),该方法包括一步,允许由式(1)表示的
羧酸酯:(其中R1表示可选取代的C1-C20碳氢化合物基团或可选取代的C3-C20杂环基团,R2表示可选取代的C1-C20碳氢化合物基团),由式(2)表示的胺:R3—NH2(2)(其中R3表示氢原子或可选取代的C1-C20碳氢化合物基团),以及由式(3)表示的甲酰胺化合物:(其中R3如上定义)在
金属烷氧化物的存在下反应。