Synthesis of polycyclic fused heterocycles based on 4,6-dinitro-1-phenyl-1H-indazole

Abstract

Tricyclic heteroaromatic systems of the furoxan, vic triazole, imidazole, and pyrazine series containing the annulated indazole fragment were synthesized based on substituted aminoindazoles prepared by the functionalization of 4 R 6 nitro 1 phenylindazoles (R = NO 2 or SO 2 Ph) at positions 6 and 7.