Abstract: The present invention provides an industrially advantageous production method of (1R,2S)-2-{[((2,4-dimethylpyrimidin-5-yl)oxy}methyl]-2-(3-fluorophenyl)-N-(5-fluoropyridin-2-yl)cyclopropane-1-carboxamide. (1R,2S)-2-{[((2,4-Dimethylpyrimidin-5-yl)oxyl}methyl]-2-(3-fluorophenyl)-N-(5-fluoropyridin-2-yl)cyclopropane-1-carboxamide (compound [A]) is produced by an industrially advantageous method by a route via a novel compound. wherein each symbol is as described in the description.

Abstract: 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.

Abstract: 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.