Process for the 2-stage synthesis of...

Details Process for the 2-stage synthesis of... Process for the 2-stage synthesis of...

2007-10-09

2007-10-09

Coleman, Brenda (Department: 1624)

Organic compounds -- part of the class 532-570 series

Organic compounds

Unsubstituted hydrocarbyl chain between the ring and the -c-...

C540S554000, C540S556000, C149S092000

Reexamination Certificate

active

10833025

ABSTRACT:
A subject-matter of the present invention is a novel process for the synthesis of hexanitrohexaazaisowurtzitane (HNIW), a compound of use as energetic filler in powders, propellants and explosives.This process comprises a first stage of reaction of an α,β-dicarbonyl derivative with a primary amine which makes it possible to form a hexasubstituted hexaazaisowurtzitane derivative.The HNIW is subsequently obtained directly, in a single reaction stage, by nitration of the hexasubstituted hexaazaisowurtzitane derivative.This process, in only 2 stages starting from a primary amine, is particularly simple and inexpensive.

REFERENCES:
patent: 5693794 (1997-12-01), Nielsen
patent: 6147209 (2000-11-01), Wardle et al.
patent: 0 753 519 (1997-01-01), None
patent: WO 00/52011 (2000-09-01), None
Nielsen, Arnold T. et al. “Polyazapolycyclics by Condensation of Aldehydes with Amines . . . ”Journal of Organic Chemistry, 1990, pp. 1459-1966.
Surapaneni, Rao et al. “Process Improvements in CL-20 Manufacture.”Institut Chemische Technologie, Jun. 27-30, 2000 pp. 108-1-108-4.

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