A Simple and Efficient Route for Preparing 4-Chloro-3,5-Dinitropyrazole

Abstract:

4-Chloro-3,5-dinitropyrazole(ClDNP) as an insensitive energetic compound has been prepared with 4-Chloropyrazole(4-ClP)via nitrated by mixture of nitric acid and sulfuric acid. The reactionconditions were investigated, such as the molar ratio of 4-chloropyrazole and HNO₃, reaction temperature, reaction time. Through the single factor experiment, the optimum reaction condition was determined that the molar ratio of 4-chloropyrazole and HNO₃ was 1:4, the reaction time was 4h, the reaction temperature was 100-105°C. The yield of the ClDNP was up to 73.8% under the above conditions．The ClDNP was re-crystallization by methylbenzene.The target product was characterized by IR, ¹H NMR, ¹³C NMR and Gauss Photography．

• Periodical: Advanced Materials Research (Volumes 1025-1026)
• Pages: 466-469
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1025-1026.466
• Online since: September 2014
• Authors: Qiao Rui, Yan Hong Wang*, Yong Xiang Li
• Keywords: ClDNP, Insensitive Energetic Compounds, Nitrification, Re-Crystallization

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