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Resolving Synthetic Challenges Faced in the Syntheses of Asymmetric N,N’-Ethylene-Bridged Energetic Compounds

Abstract

Synthetic challenges faced during the syntheses of asymmetric N,N’-ethylene-bridged energetic compounds due to the differences in the reactivity and stability of various types of energetic rings are addressed. The elusive asymmetric compounds, 12 (in which nitramino-pyrazole is bonded to nitroimino-tetrazole via an N,N’-ethylene-bridge), and 15 and 17 (in which azido-pyrazole is bonded to nitroimino-tetrazole via an N,N’-ethylene-bridge) were obtained in good yields. All the compounds were thoroughly characterized by IR, NMR [1H, 13C{1H}, 15N], elemental analysis and differential scanning calorimetry (DSC). The structures of 13 and 14 were further confirmed via X-ray crystal analysis. Heats of formation and detonation properties for all the energetic compounds were calculated using Gaussian 03 and EXPLO5 v6.01 programs, respectively. Impact and friction sensitivities were determined using standard BAM technology.

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Publication details

The article was received on 27 Jan 2017, accepted on 14 Apr 2017 and first published on 17 Apr 2017


Article type: Paper
DOI: 10.1039/C7NJ00327G
Citation: New J. Chem., 2017, Accepted Manuscript
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    Resolving Synthetic Challenges Faced in the Syntheses of Asymmetric N,N’-Ethylene-Bridged Energetic Compounds

    J. M. Shreeve, D. Kumar, G. H. Imler and D. A. Parrish, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00327G

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