Process for making 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsWilliam M. Koppes, Michael E. Sitzmann
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Abstract
The present invention is a process for making a 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine, acid salt and a process for neutralizing the acid salt to make 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine. 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine can be used as a precursor for ingredients in propellants, explosives, pyrotechnics, gas generators, pharmaceuticals, and azo dyes. The general process involves ring closure of 2,4-diamino-6-hydrazino-s-triazine with an acid and a chemical of the general formula RCN where the R comprises a leaving group, then neutralizing said acid.
Claims14
A process for the preparation of 1,2,4-triazolo[4,3-a][l,3,5]triazine-3,5,7-triamine, acid salt, comprising the steps of:
- dissolving 2,4-diamino-6-hydrazino-s-triazine with an acid;
- and,
- mixing the dissolved 2,4-diamino-6-hydrazino-s-triazine with a reagent of the formula RCN, wherein R comprises a leaving group.
A process for the preparation of 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine, comprising the steps of:
- dissolving 2,4-diamino-6-hydrazino-s-triazine with an acid;
- mixing the dissolved 2,4-diamino-6-hydrazino-s-triazine with a reagent of the formula RCN, wherein R comprises a leaving group;
- removing acid salt crystals;
- and,
- neutralizing the acid salt crystals by mixing with a substance more basic than 1,2,4-triazolo[4,3-a][1,3,5]triazine-3,5,7-triamine.
A triazolotriazine product formed by the process of:
- dissolving 2,4-diamino-6-hydrazino-s-triazine with an acid;
- mixing the dissolved 2,4-diamino-6-hydrazino-s-triazine with a reagent of the formula RCN, wherein R comprises a leaving group;
- and,
- removing acid salt crystals;
- and,
- neutralizing the acid salt crystals by mixing with a base.
Dependencies are inferred from the claim text.