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Syntheses, Crystallization, and Spectroscopic Characterization of 3,5-Lutidine N-Oxide Dehydrate
Published on: April 24, 2018
Synthesis of 4-Amino-5-nitro-7H-pyrazolo[3,4-d][1,2,3]triazine-2-oxide and Its Heat-Resistant Derivatives
Rongzheng Zhang1, Yuangang Xu1, Shuaijie Jiang1
1School of Chemistry and Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
Abstract:
4-Amino-5-nitro-7H-pyrazolo[3,4-d][1,2,3]triazine-2-oxide (PTO) is synthesized via one step in this study. Subsequently, 4,7-diamino-5-nitro-pyrazolo[3,4-d][1,2,3]triazine-2-oxide (APTO), 4-oxo-5-nitro-7H-pyrazolo[3,4-d][1,2,3]triazine-2-oxide (OPTO), and several heat-resistant salts are synthesized through local structural modifications on PTO. Comparison of thermal stability between PTO and APTO indicates that while the amino group has a negative impact on the thermal stability of APTO, it enhances the detonation performance of APTO and effectively reduces its mechanical sensitivity. Our findings provide a practical new approach for constructing energetic materials with excellent stability.
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