The United States of America As Represented by the United States

Donald G Ott

Michael D Coburn

Theodore M Benziger

Kien Y Lee

A method of making 3,6-diamino-1,2,4,5-tetrazine.

Synthesis of 3,6-diamino-1,2,4,5-tetrazine

3-Amino-6-(3,5-dimethylpyrazol-1-yl)-1,2,4,5-tetrazine (ADMPT) and a method of making it.

ADMPT and its synthesis

Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) from 3,5-dichloroanisole. Nitration of 3,5-dichloroanisole under relatively mild conditions gave 3,5-dichloro-2,4,6-trinitroanisole in high yield and purity. Ammonolysis of this latter compound gave the desired TATB. Another route to TATB was through the treatment of the 3,5-dichloro-2,4,6-trinitroanisole with thionyl chloride and dimethylformamide to yield 1,3,5-trichloro-2,4,6-trinitrobenzene. Ammonolysis of this product produced TATB.

Preparation of 1,3,5-triamino-2,4,6-trinitrobenzene from

The ammonium salt of 3,5-dinitro-1,2,4-triazole has utility as a chemical explosive. In accordance with the present invention, it may readily be produced by solvent extraction using high-molecular weight, water-insoluble amines followed by amination with anhydrous ammonia gas. The aqueous reaction mixture produced in the synthesis of the parent compound, 3,5-dinitro-1,2,4-triazole, is quite suitable--and indeed is preferred--for use as the feed material in the process of the invention.

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Los Alamos, NM, United States of America

Donald G Ott