Oxygen-Rich 1,2,4-Triazolo [3,4-d]-1,2,4-triazolo[3,4-f]furazano [3,4b]pyrazines as Energetic Materials Aleksei B. Sheremetev,* [a] Vecheslav L. Korolev, [a] AleksandrA.P otemkin, [a, b] Abstract: Ac onvenient one-pot synthesis of 5,10-bis(trinitromethyl)-(5)a nd 5,10-bis(fluorodinitromethyl)furazano[3,4e]di([1,2,4]triazolo)[4,3-a:3',4'-c]pyrazines (6)b ye mploying the reaction of 5,6-dichlorofurazano[3,4-b]pyrazine with 5-(trinitromethyl)-and 5-(1-fluoro-1,1-dinitromethyl)tetrazoles, respectively,w as developed. The protocol was carriedo ut under mild conditions at am oderate temperature and over short reaction times to synthesize the products in excellent yields. For the first time, thesep olynitromethyl-substituted compounds, whichm ay have potential use as explosive and propellant materials,h ave been fully characterized. The burningr ate of compound 5 was shown to be slightly superior to that of 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane (CL-20).[a] Prof. A. B. Sheremetev,V .L.Korolev,A .A.P otemkin, N.