Аннотация:A method for the synthesis of 5-arylisoxazole- and 4,5-dichloroisothiazole-3-carboxylic acids derivatives based on 4-acetyl- and 4-benzoylpyridine has been developed. Esters and amides were prepared by acylation of (pyridin-4-yl)methanols and (pyridin-4-yl)methanamines with acid chlorides of substituted 1,2-azole-3-carboxylic acids in ether or methylene chloride in the presence of triethylamine. Quaternary ammonium salts of synthesized pyridine derivatives were also obtained.
