Synthesis of N, N''''-Bis(2,4-Dinitrobenzofuroxano)-3, 5-Dinitro-2, 6-Diaminopyridine

An improvement was made on 2, 6 - bis (picrylamino) - 3, 5 - dinitropyridine (PYX), as synthesized by the Los Alamos National Laboratory in U. S. A., The thermally stable energetic material PYX has been used to stimulate nonproducing deep oil and. gas wells and other geothermal environments. But PYX has a Low density. It has been reported that the replacement of nicro groups by furoxan groups can result in an increase in the density and detonation velocity of explosives. The introduction of aminoheterocycles in explosive molecules can result in an increase of density and in a decrease of impact sensitivity. In order to utilize the above advantages, we have synthesized the title compound by the introduction of two benzofuroxano groups in-the PYX molecular structure, resulting in an increase of density and detonation velocity.