Oxygen‐Rich 1,2,4‐Triazolo[3,4‐d]‐1,2,4‐triazolo[3,4‐f]furazano[3,4‐b]pyrazines as Energetic Materials

A convenient one‐pot synthesis of 5,10‐bis(trinitromethyl)‐ (5) and 5,10‐bis(fluorodinitromethyl)furazano[3,4‐e]di([1,2,4]triazolo)[4,3‐a:3′,4′‐c]pyrazines (6) by employing the reaction of 5,6‐dichlorofurazano[3,4‐b]pyrazine with 5‐(trinitromethyl)‐ and 5‐(1‐fluoro‐1,1‐dinitromethyl)tetrazoles, respectively, was developed. The protocol was carried out under mild conditions at a moderate temperature and over short reaction times to synthesize the products in excellent yields. For the first time, these polynitromethyl‐substituted compounds, which may have potential use as explosive and propellant materials, have been fully characterized. The burning rate of compound 5 was shown to be slightly superior to that of 2,4,6,8,10,12‐hexanitrohexaazaisowurtzitane (CL‐20).