4546-95-6Relevant articles and documents
4,5-dicyano-1,2,3-triazole—a promising precursor for a new family of energetic compounds and its nitrogen-rich derivatives: Synthesis and crystal structures
Cao, Wenli,Qin, Jian,Sinditskii, Valery P.,Zhang, Jianguo
, (2021/11/27)
The nitrogen-rich compounds and intermediates with structure of monocyclic, bicyclic, and fused rings based on 1,2,3-triazole were synthesized and prepared by using a promising precursor named 4,5-dicyano-1,2,3-triazole, which was obtained by the cyclization reaction of diaminomale-onitrile. Their structure and configurational integrity were assessed by Fourier transform-infrared spectroscopy (FT-IR), mass spectrometry (MS), and elemental analysis (EA). Additionally, fourteen compounds were further confirmed by X-ray single crystal diffraction. Meanwhile, the physical properties of four selected compounds (3·H2 O, 6·H2 O, 10·H2 O, and 16) including thermal stability, detonation parameters, and sensitivity were also estimated. All these compounds could be consid-ered to construct more abundant 1,2,3-triazole-based neutral energetic molecules, salts, and complex compounds, which need to continue study in the future in the field of energetic materials.
Green environmentally friendly 1-H-1,2,3-triazole preparation method
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Paragraph 0031; 0032; 0034; 0035; 0037; 0038; 0040; 0041, (2019/04/29)
The invention discloses a green environmentally friendly 1-H-1,2,3-triazole preparation method. The method uses benzotriazole and hydrogen peroxide as raw materials, 1-H-1,2,3-triazole-4,5-dicarboxylic acid is obtained under the action of a catalyst through oxidative ring opening and then acid adjusting, toluene is subjected to reflux decarboxylation, 1-H-1,2,3-triazole is obtained, the method isgreen, clean and low-cost, the product total yield can reach 80%, the purity is more than 99%, and the method is suitable for industrial production.
Synthesis method for 1H-1,2,3-triazole
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Paragraph 0032; 0038; 0039; 0043; 0044; 0048; 0049, (2017/08/31)
The invention provides a synthesis method for 1H-1,2,3-triazole. The synthesis method comprises the following steps of (a) oxidizing with potassium permanganate in an acid condition by using benzotriazole as a starting material and tetrabutylammonium bromide as a catalyst, so as to obtain 1H-1,2,3-triazole-4,5-dicarboxylic acid; and (b) under catalysis of N,N-diisopropylethylamine, removing the carboxyl group of the 1H-1,2,3-triazole-4,5-dicarboxylic acid, so as to obtain 1H-1,2,3-triazole. In the synthesis method, the oxidization ring-opening reaction of benzotriazole is carried out with potassium permanganate as an oxidant in the acid condition. The potassium permanganate has high oxidization in the acid condition, and the benzotriazole reacts fully, so that the yield of the 1H-1,2,3-triazole-4,5-dicarboxylic acid is improved. In step (b), water is used as a solvent and can be evaporated in post-treatment to be recycled. The synthesis method uses simple materials easy to obtain, the reaction conditions are mild, the operations are simple, the yield is high, the prepared 1H-1,2,3-triazole product has high quality, and the reaction cost is low. The synthesis method is applicable to industrial production.
