Abstract: An efficient synthesis of 2-R-4, 6-dinitro-2H-indazoles (R= aryl or substituted amine) from 2, 4, 6-trinitrotoluene was elaborated. The proposed method includes formation of C-(2, 4, 6-trinitrophenyl)-NR-azomethines 1 (ag) from TNT or the product of its transformation 2, 4, 6-trinitrobenzaldehyde (TNBA) with the further regiospecific substitution of the ortho-nitro group in 1 (ag) by the azido group under the action of NaN3. Thermolysis ...
