Demydchuk B. New transformations of chlorocontaining enamides and 2-aza-1,3-dienes into derivatives of nitrous heterocycles

It is shown that the products of joining of thioles to enamides reacts with the reagent of Lawesson and give 4-mercapto-1,3-thiazole. It is found, that products of addition of acetamidine, benzamidine and ammonia to the enamides suitable for the synthesis of new derivatives of oxazole, s-triazine and 3а,6а-dihydrothiazolo[4,5-d]thiazole. It is established, that trichlorosubstituted 2-aza-1,3-dienes directly reacts with the hydrazine hydrate with formation of 3-aryl-5-dichloromethyl-4,5-dihydro-1,2,4-triazoles. It is shown that on the basis of tetrachlorosubstituted 2-aza-1,3-dienes is possible to synthesize of the condensed compounds in which s-triazine or benzimidazole system annealed with 5-, 7-, 8- and 9-members azaheterocycles.