Reaction of 1,2,4-Triazine-5-carbonitriles with 5-[(2-Hydroxyethyl)sulfanyl]- and 5-{[2-(2-Hydroxyethoxy)-ethyl]sulfanyl}-3-amino-1,2,4-triazoles1

The solvent-free reaction of 1,2,4-triazine-5-carbonitriles with newly synthesized 5-[(2-hydroxyethyl)sulfanyl]- and 5-{[2-(2-hydroxyethoxy)ethyl]sulfanyl}-3-amino-1,2,4-triazoles under heating was studied. It was shown that in the case when the C 5 atom of the 1,2,4-triazole ring bears hydroxy(ethoxy)ethylsulfanyl substituents, 5-amino-1,2,4-triazines are formed as the main reaction products, while the ipso -substitution products of the C 5 -cyano group of the substituted 1,2,4-triazole ring were isolated only as by-products. With a 1,2,4-triazole with a monoethylene glycol fragment at the C 5 position, a complex mixture of products was formed.