Concise synthesis of a fused energetic pyrazolotriazine with good performance

Literature Information

Publication Date 2023-12-11
DOI 10.1039/D3NJ04391F
Impact Factor 3.591
Authors

Haichuan Shi, Yuqing Wang, Xinyu Wang, Xiaotian Zhang, Ming Huang, Haijun Yang, Zhenghang Luo


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Abstract

Ring-fused heterocycles are a promising direction for insensitive high-energy materials (IHEMs). Besides, the scalable synthesis of IHEMs is a favourable factor for practical applications. A new fused energetic pyrazolotriazine, 4-amino-3,8-dinitropyrazolo[5,1-c][1,2,4]triazine (GD-1), was synthesized via the construction of a pyrazolotriazine skeleton followed by nitration starting from the cheap and commercially available 5-aminopyrazole. GD-1 crystallizes as GD-1·2H2O (monoclinic) or GD-1·CH3OH (orthorhombic) when crystallized in acetone or methanol. GD-1 with a monoclinic crystal system has a high density (ρ = 1.83 g cm−3), good detonation performances (VD = 8895 m s−1, P = 35.4 GPa), good thermal stability (Tp = 306 °C) and low sensitivities (IS > 60 J, FS > 360 N). The good performances as well as the readily scalable synthesis make GD-1 a potential IHEM.

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