Reduction of 1, 2-dinitroso-4-nitroso-5-azidobenzene (111) with an insufficient amount of hydrogen iodide produces 1, 2diamino-4-nitro-bazidobenzene (IV), whereas an excess of hydrogen iodide produces 2, 4, 5-triaminonitrobenzene (I). Condensation with 1, 2- dicarbonyl derivatives gives 6-azido-7-nitroquinoxalines (VIII) from IV and 6-amino-7- nitroquinoxalines (VII) from I. Certain 6-chloro-7-nitroquinoxalines are unreactive toward ...
