Thermal characterization and theoretical and experimental comparison of picryl chloride derivatives of heterocyclic energetic compounds

The Thermal Investigation, Thermokinetic Analysis and Antimicrobial Activity of Two New Energetic Materials Obtained from Nucleophilic Substitution of Nitro Pyridine Ring

“…This in observed with numerous studies in the literature [13 -17]. Furthermore, it is reported that, if a substituent is attached, via amino bridge, to the aromatic rings involving nitro group at ortho position, decomposition reaction again resembles the furoxane mechanism [4,43,44]. In the same studies, N (2,4,6trinitrophenyl) hydrazine is reported to be similarly decomposed at around 190°C.…”

“…The reaction given in Scheme 2 is the most prominent reaction to furoxane formation in the literature. If the amino group is attached instead of the azide group, the result is again the formation of the furoxane ring [4]. In this study, dinitro pyridine compound and heterocyclic compound were selected as the polynitro compound.…”

“…Picrylchloride is a pretty good example of this. Picrylchloride releases picrylamin with ammonia at room temperature as well as nucleophilic substitution reactions with picrylchloride; hydrazine, amino pyrazol, amino-1,2-4-triazol at hydrothermal conditions with the amino group [4][5][6][7][8].…”

The Structure ofN‐phenyl‐pyrazoles and Indazoles: Mononitro, Dinitro, and Trinitro Derivatives

“…Although we have prepared several of these derivatives (related to 7 , 11 , and 15 ), we have never observed sudden decomposition even during the determination of their melting points. This is possibly related to the absence of supplementary nitro groups on the heterocycle, because the compounds described as explosives have these substituents .…”

Some Nitrogen Rich Energetic Material Synthesis by Nucleophilic Substitution Reaction from Polynitro Aromatic Compounds

“…[4][5][6] Although many aromatic substances predominantly undergo electrophilic substitution reactions, when more than one nitro group is bonded to the aromatic ring the electron density of the aromatic ring decreases due to the high electron withdrawing effect of the nitro groups, and this ring can then undergo nucleophilic substitution reactions and the electron distribution of the ring is unbal-anced. [7][8][9] A large number of energetic substances prepared by this method were reported in the literature. [10][11][12][13][14] Our choice of hydrazine and guanidine is since they are rich in nitrogen and the choice of 4-aminopyrazole is because of its heterocyclic structure.…”