Synthetic method for 3-(4-aminofurazan-3-radical)-4-(4-nitrofurazan-3-radical) furazan

Abstract

The invention provides a synthetic method for 3-(4-aminofurazan-3-radical)-4-(4-nitrofurazan-3-radical) furazan. 3-(4-aminofurazan-3-radical)-4-(4-nitrofurazan-3-radical) furazan (ANTF) is a low-melting-point (100 DEG C) explosive, is expected to replace TNT to be used in casting explosives, and is also an intermediate for synthesizing other novel explosives. An existing synthetic method of ANTF has the defects of being large in acid use amount, low in synthesis yield, strict in reaction condition and the like. 3,4-bis(3'-aminofurazan-4'-radical) furoxan (BAFF) is adopted as a raw material, 3,4-bis(3'-aminofurazan-4'-radical) furoxan (BAFF) and SnCl2.2H2O are firstly subjected to a reduction reaction to obtain 3,4-bis(aminofurazan-4-raidcal) furazan, and then 3,4-bis(aminofurazan-4-raidcal) furazan and H2O2 are subjected to an oxidizing reaction to obtain the target product 3-(4-aminofurazan-3-radical)-4-(4-nitrofurazan-3-radical) furazan. 3,4-bis(aminofurazan-4-raidcal) furazan is adopted as the raw material, H2O2 (20%-30%) is adopted as an oxidizing agent, Na2WO4 is adopted as a catalyst, and 3-(4-aminofurazan-3-radical)-4-(4-nitrofurazan-3-radical) furazan is synthesized under the acidic condition through the oxidizing reaction. The synthetic method has the advantages of being easy and convenient to operate, high in safety, controllable in process and the like.

Description

Technical field [0001] The invention relates to a method for synthesizing molten cast explosives, in particular to the synthesis of 3-(4-aminofurazan-3-yl)-4-(4-nitrofurazan-3-yl)furazan (ANTF) method. Background technique [0002] Since the advent of TNT explosives, TNT-based melt-cast explosives have been widely used in various mixed explosives. However, TNT-based melt-cast explosives generally have the following shortcomings: because they contain low melting point impurities such as dinitrobenzene, mononitrobenzene, and asymmetric trinitrobenzene, which are difficult to separate, the castings leak oil and reduce the explosive filling density; TNT forms a flaky coarse crystalline structure after condensation and is brittle, prone to fracture surfaces; cracks are prone to occur after thermal cycles, and the degree of thermal expansion and contraction is large. These deficiencies have led to greater safety hazards in the use of TNT-based melt-cast explosives. For this reason, ...

AI Technical Summary

Problems solved by technology

However, TNT-based melt-cast explosives generally have the following disadvantages: due to the low-melting impurities such as dinitrobenzene, mononitrobenzene, and asymmetric trinitrobenzene that are difficult to separate, the castings leak oil and reduce the filling density of explosives; After condensation, TNT forms a flaky coarse crystal structure and is brittle, and is prone to fracture surfaces; it is prone to cracks after thermal cycles, and the degree of thermal expansion and contraction is large

[0003] Due to its low melting point, furoxan-like energetic compounds are expected to replace TNT, and have become one of the hot research topics in molten-cast elemental explosives. The typical representative is 3,4-bis(3′-nitrofurazan-4′-yl) Furazan oxide (DNTF), but DNTF has two deficiencies as a melting and casting carrier explosive. One is that the melting point is 110°C, which has reached the upper limit of the carrier of melting and casting explosives, which brings difficulties to the melting and casting process; The ring contains active coordination oxygen, which has high mechanical sensitivity, and there are also great safety hazards in the application process.

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