Tetra-azido alkane and preparation method thereof

Abstract

The invention discloses a tetra-azido alkane and a preparation method thereof. A structural formula of the tetra-azido alkane is (N3CH2)2CH(CH2)3CH(CH2N3)2. The preparation method comprises the following steps of: under the protection of nitrogen, reacting diethyl malonate and 1,3-dibromopropane at a low temperature to obtain tetracthyl-1,1,5,5-pentanctetracarboxylate; under the protection of the nitrogen, carrying out ice bath at below 5 DEG C, and reacting the tetracthyl-1,1,5,5-pentanctetracarboxylate and a tetrahydroaluminate diethyl ether solution to obtain 2,6-dihydromethyl-1,7-heptandiol; carrying out the ice bath at below 5 DEG C, reacting paratoluensulfonyl chloride and a pyridine solution of the 2,6-dihydromethyl-1,7-heptandiol for 10h, and carrying out chloroform recrystallization to obtain 2,6-p-ditoluenosulfonate methyl-1,7-p-ditoluenosulfonate methyl heptaester; and adding an aqueous solution of sodium azide to a dimethylformamide solution of the 2,6-p-ditoluenosulfonate methyl-1,7-p-ditoluenosulfonate methyl heptaester to react for 15h at 80 DEG C to obtain a 2,6-biazido-1,7-di-azido heptane product.

Description

Technical field: [0001] The present invention relates to a kind of high heat energy compound, especially a kind of tetraazide alkanes and its preparation method. Background technique: [0002] The use of azide-based binders, plasticizers, oxidants and other additives in energetic materials such as propellants, propellants and high-energy explosives can not only increase the energy level (each azide group can provide 356kJ / mol Formation enthalpy), can also endow it with many other excellent properties: increase the nitrogen content of the system without affecting its carbon-hydrogen ratio, increase the exhaust volume of the system during combustion; increase the burning speed of propellant or propellant without increasing Flame temperature; reduces the target signature produced by various propulsion systems, thereby increasing the stealth of the weapon. The azide compounds that have been synthesized are generally divided into azide polyethers, azide nitroamines, azide nitro ...

AI Technical Summary

Problems solved by technology

At present, the tetraazide alkanes that have been synthesized mainly include azide derivatives of pentaerythritol, which can provide more energy for energetic materials because of their four azide groups, but because of their slow burning speed, making its preparation technology can not be widely applied

In view of this, the synthesis of new tetraazido derivatives with fast burning speed has become a research hotspot, and 2,6-diazido-1,7-diazidoheptane has not yet seen relevant information on its synthesis and performance. to report

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