ν-Triazolines; 33. Synthesis of 3-aminoquinoxaline 1-oxides and 2-aminopyrido[3,4-b]pyrazine 4-oxides

Article abstract of DOI:10.1055/s-1992-26335

N¹,N¹-Disubstituted N²-(2-nitrophenyl)- and N²-(2-nitropyridyl)phenylacetamidines, derived from the thermal rearrangement of 5-amino-4,5-dihydro-1-(2-nitroaryl)-4-phenyl-1H-1,2,3-triazoles, are obtained in a one