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New synthesis of 2,6-diamino-3,5-dinitropyrazine-1-oxide from 2,6-diaminopyrazine-1-oxide

United States Patent Application

20090299067
A1
View the Complete Application at the US Patent & Trademark Office
Lawrence Livermore National Laboratory - Visit the Industrial Partnerships Office Website
A method for the synthesis of 2,6-Diamino-3,5-dinitropyrazine-1-oxide including nitration of 2,6-diaminopyrazine-1-oxide. The step of nitration may use nitrating agents 20% Oleum/100% HNO3, 100% HNO3 and conc. H2504/100% HNO3 or nitronium tetrfluoraoborate. The synthesis of 2,6-diaminopyrazine-1-oxide may involve both the oxidation of 2,6-diaminopyrazine, the amination of a precursor 2,6-disubstitutedpyrazine-1-oxide or direct formation of the 2,6-diaminopyrazine-l-oxide from the precursor, 2-amino-6-hydroxamino-pyrazine-1-oxide.
Pagoria, Philip F. (Livermore, CA), Mitchell, Alexander R. (Livermore, CA), Bala, Kason (Winchester, GB)
12/ 130,444
May 30, 2008
[0001] The United States Government has rights in this invention pursuant to Contract No. DE-AC52-07NA27344 between the United States Department of Energy and Lawrence Livermore National Security, LLC for the operation of Lawrence Livermore National Laboratory.