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Citation: CAI Hua-Qiang, SHU Yuan-Jie, CHENG Bi-Bo. An Improved Method for Synthesis of FOX-7[J]. Chinese Journal of Applied Chemistry, ;2005, 22(1): 95-98. shu

An Improved Method for Synthesis of FOX-7

1.
Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900

Corresponding author: CAI Hua-Qiang,
Received Date: 20 February 2004
Available Online: 3 June 2004
Fund Project: 中国工程物理研究院行业科学技术预先研究基金资助(20020540) (20020540)

A simple, convenient and efficient procedure for synthesis of 1,1-diamino-2,2-dinitroethylene(FOX-7) was described. Nitrations of 2-methylimidazole at ambient temperature affords 2-(dinitromethylene)-5,5-dinitro-4-imidazolidinone(compound 1), which reacts with water to give FOX-7. The key step was ring cleavage of compound 1 by addition of water to the reaction mixture or vice versa. By this means the synthetic pathway of 2-methylimidazole to FOX-7 could be achieved in a continuous process. The overall yield was 35.8%. The structure of FOX-7 was characterized by IR, MS, NMR and elemental analysis.
- diaminodinitroethylene(FOX-7),
- methylimidazole,
- synthesis
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