Method of preparation of 2,6-bis(picrylamino)-3,5-dinitropyridin

Details Method of preparation of 2,6-bis(picrylamino)-3,5-dinitropyridin Method of preparation of 2,6-bis(picrylamino)-3,5-dinitropyridin

1989-04-07

1990-08-14

Lee, Mary C.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

149 92, 149105, 1491096, C07D21374

Patent

active

049488970

ABSTRACT:
A method for preparing 2,6-bis(picrylamino)-3,5-dinitropyridine (PYX) which includes the steps of first dissolving crystalline PYX in a primary solvent in which the solvent used is selected from the group consisting of pyridine, dimethylformamide, methylsulfoxide or mixtures thereof. The primary solvent system is then combined with a second solvent in which the PYX is substantially insoluble, but which, in admixture with the primary solvent, forms a true solution of the PYX, referred to as the secondary solution. A third solvent is then added to the binary solvent system, which third solvent is soluble with the binary solvent system but which promotes precipitation of PYX in a form which exhibits improved characteristics as an explosive.

REFERENCES:
patent: 3678061 (1972-07-01), Coburn
patent: 4564405 (1986-01-01), Pallanck
Adenis et al., "Syntheses and Properties of Some Thermally Stable Initiating Explosives", E.S.A., SP-144, 1980, pp. 69-76.

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