135285-90-4Relevant articles and documents
New precursors for hexanitrohexaazaisowurtzitane (HNIW, CL-20)
Chung,Kil,Choi,Chu,Lee
, p. 1647 - 1649 (2000)
Two new polyacylhexaazaisowurtzitanes were synthesized. Pentaacetyl- or pentaacetylformylhexaazaisowurtzitane can be a precursor in the preparation of HNIW, recently developed highly energetic material.
Synthesis and scale-up of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane from 2,6,8,12-tetraacetyl-4,10-dibenzyl-2,4,6,8,10,12-hexaazaisowurtzitane (HNIW, CL-20)
Latypov, Nikolaj V.,Wellmar, Ulf,Goede, Patrick,Bellamy, Anthony J.
, p. 156 - 158 (2000)
A two-stage conversion of 2,6,8,12-tetraacetyl-4,10-dibenzyl-2,4,6,8,10,12-hexaazaisowurtzitane to 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane, involving nitrosation followed by nitration, is described. It is shown that the purity of the fi
Heteropolyacids: As efficient catalysts for the nitration of 2,4,6,8,10,12-hexaacetyl-2,4,6,8,10,12-hexaazaisowurtzitane
Ramazani, Ali,Azizkhani, Vahid,Joo, Sang Woo
, p. 569 - 575 (2019/09/30)
2, 4, 6, 8, 10, 12-Hexanitro-2, 4, 6, 8, 10, 12-hexaazaisowurtz-itane (HNIW) more commonly called CL-20 is a novel high-density cyclic nitramine that is synthesized for the use as an energetic component in propellant formulations. It is usually prepared via nitration of precursors in the presence of concentrated nitric and sulphuric acids. Here in this work, for the first time synthesis of CL-20 from nitration of 2, 4, 6, 8, 10, 12-hexaacetyl-2, 4, 6, 8, 10, 12-hexaazaisowurtzitane (HAIW) in the presence of various clean nitrating agents like heteropolyacids has been reported. In the present conditions, the reactions are fairly green, clean and environmentally friendly. Meanwhile, the effects of reaction temperature, time and other factors on the yields were studied. The structure of the synthesized compound was confirmed by using various spectral techniques like IR, 1H, 13C, 14N-NMR and some of its physical properties.
Method for preparing CL-20 through three-step reaction
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Paragraph 0024; 0026; 0028, (2017/12/09)
The invention relates to a method for preparing CL-20 through a three-step reaction. The method comprises: adding HBIW, DMF, bromobenzene, Pd/C and acetic anhydride into a high pressure reaction kettle; and carrying out first hydrogenolysis on the HBIW in