Nitroazines. 9. Characteristic features of nucleophilic substitution of the nitro group in dihydroazolo[5,1-c] [1,2,4]triazines

The reaction of 6-nitro-7-oxo-4,7-dihydroazolo[5,1-c]-1,2,4-triazines with O-, N-, and S-nucleophiles leads to the corresponding 6-substituted compounds. In the reaction of 2,4-dimethyl-6-nitro-7-oxo-4,7-dihydro-1,2,4-triazolo[5,1-c][1,2,4]triazine with hydrazine hydrate, 3-methyl-5-(N-methylamino)-1,2,4-triazole is formed.Article 8, see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 253–257, February, 1989.