Synthesis And Characterization Of Tetrazine Compounds And BCT Derivatives

Pyromellitic triazine compound, i.e., carbonitride six-membered heterocyclic structure of1,2,4,5-tetrazine triazine compound, has a high nitrogen content, the mass fraction is68.29%, ofwhich the nitrogen element is constituted of N-N, C=N, N=N, and C-N, all of which the bindingenergy is high, plus tension of the heterocyclic ring, the tetrazine ring having higher energy level.If tetrazine ring and other reagents react in the way of nucleophilic substitution, azido reactionand etc, it will generate a number of dense materials with low inertia and high energy and a highuse value. Therefore, studying the compounds of1,2,4,5–tetrazine has very broad applicationprospects.Via the classic methods of the compounds of the1,2,4,5-tetrazine classes, this paperanalyzes the synthesis of the3,6-bis (3,5-dimethyl-pyrazol)-1,2,4,5-tetrazine (BT),which was avery important pyromellitic triazine reaction intermediates, obtained by guanidine nitrate, and80%hydrazine hydrate as the initial reactant, then the amination reaction with acetylacetone,next the ring-forming reaction, and finally the oxidant dehydrogenation. Based on BT, viatrichloroisocynurate reaction,3,6-dichloro-1,2,4,5-tetrazine(BCT), a highly reactivetetrazine-based compound is synthesized.. and then via a nucleophilic substitution reaction ofBCT precursor, possible compounds of3,6-bis-(3,5-diamino-1,2,4-triazolyl)-1,2,4,5-tetrazine(BTDTz),3,6-bis-1,2,4-triazol-1,2,4,5-tetrazine and3,6-bis-(3,5-dinitro-1,2,4-triazolyl)-1,2,4,5-tetrazine and3,6-dinitro furazan-1,2,4,5-tetrazine are synthesized. The structures werecharacterized by IR, MS,1HNMR, elemental analysis, and a series of other methods. It is greatly limited for the application of traditional energetic material due to thecharacteristics of the high signal intensity, mostly because the proportion of hydrogen is large.Thus this paper tries to demonstrate a design route of synthesizing Energetic Materials basedtetrazine ring without hydrogen.