166046-53-3Relevant academic research and scientific papers
Increment of activity of Pd(OH)2/C catalyst in order to improve the yield of high performance 2,4,6,8,10,12-hexanitrohexaazaisowurtzitane (HNIW)
Fotouhi-Far, Farshad,Bashiri, Hadis,Hamadanian, Masood,Keshavarz, Mohammad Hossein
, p. 1489 - 1494 (2017)
CL-20 [2,4,6,8,10,12-hexanitrohexaazaisowurtzitane (HNIW)] is a well-known high performance explosive. The reductive debenzylation of hexaazaisowurtzitane (HBIW) over supported palladium catalyst produces 2,6,8,12-tetraacetyl-4,10-dibenzyl-2,4,6,8,10,12-h
Stick-like mesoporous titania loaded Pd as highly active and cost effective catalysts for hydrodebenzylation of hexabenzylhexaazaisowurtzitane (HBIW)
Liu, Shuang,Ji, Fei,Li, Xiaoyu,Pan, Xiaoli,Chen, Shuyuan,Wang, Xuefei,Zhang, Yanhua,Men, Yong
, (2019)
Hydrodebenzylation of hexabenzylhexaazaisowurtzitane (HBIW) is one key step for the synthesis of High Energy Density Compound CL-20 (hexanitrohexaazaisowurtzitane). Design of a “high atom economy” debenzylation catalyst to promote the industry production
Method for preparing CL-20 through three-step reaction
-
Paragraph 0023, (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
Optimization of reductive debenzylation of hexabenzylhexaazaisowurtzitane (the key step for synthesis of HNIW) using response surface methodology
Bayat, Yadollah,Ebrahimi, Heshmat,Fotouhi-Far, Farshad
, p. 1733 - 1738 (2013/01/15)
Reductive debenzylation of hexabenzylhexaazaisowurtzitane (HBIW) was carried out using palladium hydroxide deposited on activated carbon catalyst. The catalyst has been characterized using a nitrogen adsorption/desorption isotherm, a hydrogen isotherm, scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The synthesized catalyst showed pore sizes larger than 20 A, which are attributed to mesopore structures. A multivariate optimization approach was developed by means of central composite design (CCD) for optimizing reaction conditions. The influence of four variables, including the catalyst to HBIW (1) relative percent, reaction temperature, hydrogen pressure, and acetic anhydride (Ac2O), on the reaction yield was investigated. The results showed that the optimum parameters for reductive debenzylation were 20% (w/w) for catalyst to HBIW (1) percent, 48.5 °C for reaction temperature, 4.25 bar for hydrogen pressure, and 10.9 for Ac2O/HBIW mole ratio. Under these conditions, the reaction yield increased to 73%.
Synthesis of CL-20 by clean nitrating agent dinitrogen pentoxide
Qian, Hua,Lv, Chunxu,Ye, Zhiwen
body text, p. 434 - 439 (2009/08/08)
CL-20 is a high energy material. It is usually prepared via nitration with concentrated nitric and sulfuric acid, but this technique pollutes the environment. In this article, CL-20 was synthesized with 2,6,8,12- tetraacetylhexaazatetracyclo[5,5,0,03
Reductive debenzylation of hexabenzylhexaazaisowurtzitane - The key step of the synthesis of polycyclic nitramine hexanitrohexaazaisowurtzitane
Koskin,Simakova,Parmon
, p. 2370 - 2375 (2008/12/23)
Main features of the reductive debenzylation of 2,4,6,8,10,12-hexabenzyl-2, 4,6,8,10,12-hexaazaisowurtzitane were studied. This process is the key step of the synthesis of 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo[5.5.0. 03,11.0s
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 (2013/09/07)
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
Synthesis of polyazapolycyclic caged polynitramines
Nielsen, Arnold T.,Chafin, Andrew P.,Christian, Stephen L.,Moore, Donald W.,Nadler, Melvin P.,Nissan, Robin A.,Vanderah, David J.,Gilardi, Richard D.,George, Clifford F.,Flippen-Anderson, Judith L.
, p. 11793 - 11812 (2007/10/03)
Syntheses of new polyazapolycyclic caged polynitramines are described. Sequentially reacting 4,10-dibenzyl-2,6,8,12-tetraacetyl-2,4,6,8,10,12- hexaazaisowurtzitane (5a) with NOBF4 and NO2BF4 in sulfolane solvent produces 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazatetracyclo- [5.5.0.05,9.03,11] dodecane, 6). Syntheses of two new polyazapolycyclic caged trinitramines, 3,5,12-trinitro-3,5,12-triazawurtzitane (7a) and 2,4,10- trinitro-2,4,10-triazaadamantane (12a), as well as their labile parent secondary amines, are discussed. A new caged polynitrosamine, 3,5,12- trinitroso-3,5,12-triazawurtzitane (7d), has been obtained by ring-cleavage nitrosation of the new hexamine-wurtzitane compound 3,5,7,9- tetraazahexacyclo[9.3.1.13,7.02,9.04,13.05,10]-hexadecane (10).
Reductive debenzylation of hexabenzylhexaazaisowurtzitane
Bellamy, Anthony J.
, p. 4711 - 4722 (2007/10/02)
The reductive debenzylation of hexabenzylhexaazaisowurtzitane (2) under a wide variety of hydrogenation conditions has been investigated. Hydrogenation of 2 in acetic anhydride gives the tetraacetyl dibenzyl derivative 3 as the final product. Further acet
