Caged polynitramine compound
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorArnold T. Nielsen
Life of this patent
Estimating the term…
Abstract
A new compound, 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-hexaazatetracyclo5.5.0.0.sup.5,9.0 3,11 !dodecane) is disclosed and a method of preparation thereof. The new compound is useful as a high energy, high density explosive. ##STR1##
Claims28
A compound 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (HNIW), with the structure:
- ##STR5##
A method of preparing 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (HNIW) comprising the steps of:
- A. converting stoichiometric amounts of starting materials benzylamine and glyoxal at a sufficient temperature into 2,4,6,8,10,12-hexabenzyl-2,4,6,8,10,12-hexaazaisowurtzitane (HBIW) through condensation in a suitable solvent in the presence of an organic acid catalyst;
- B. reductively acylating 2,4,6,8,10,12-hexabenzyl-2,4,6,8,10,12-hexaazaisowurtzitane (HBIW) with an acid promoter and a metal hydrogenation catalyst to form 4,10-dibenzyl-2,6,8,12-tetraacetyl-2,4,6,8,10,12-hexaazaisowurtzitane (TAIW);
- and
- C. forming a suspension of said 4,10-dibenzyl-2,6,8,12-tetraacetyl-2,4,6,8,10,12-hexaazaisowurtzitane (TAIW) in an aqueous sulfolane solution and sequentially debenzylating and nitrating to produce said 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (HNIW).
A method of producing the alpha-form of the product, alpha-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane, comprising the steps of:
- A. reacting 4,10-dibenzyl-2,6,8,12-tetraacetyl-2,4,6,8,10,12-hexaazaisowurtzitane sequentially with nitrosonium tetrafluoroborate and nitronium tetrafluoroborate in sulfolane solvent;
- B. precipitating a sulfolane adduct;
- and
- C. recrystallizing the alpha-form of the product from concentrated nitric acid.
A method of producing the beta-form of the product, beta-2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane, comprising the steps of:
- A. reacting 4,10-dibenzyl-2,6,8,12-tetraacetyl-2,4,6,8,10,12-hexaazaisowurtzitane sequentially with nitrosonium tetrafluoroborate and nitronium tetrafluoroborate in sulfolane solvent;
- B. precipitating a sulfolane adduct;
- and
- C. recrystallizing from benzene or a mixture of ethyl acetate and chloroform to produce the beta-form of the product.
Dependencies are inferred from the claim text.