Results 11 to 20 of about 328 (155)

Synthesis and characterization of two 1,2,4-oxadiazole-furazan-based nitrate ester compounds as potential energetic plasticizers

open access: yesFirePhysChem, 2023
Two novel energetic compounds, 3-nitroxymethyl-5-(4-nitro-furazan-3-yl)-1,2,4-oxadiazole (4) and 3-nitroxymethyl-5-(4-azido-furazan-3-yl)-1,2,4-oxadiazole (5), were synthesized.
Qi Xue   +5 more
doaj   +1 more source

Synthesis and Crystal Structure of 3-(4-Cyano-3-nitro-1H-pyrazol-5-yl)-4-nitrofurazan: Comparison of the Influence of the NO2 and CN Groups on Crystal Packing and Density

open access: yesMolbank, 2022
The title compound was synthesized and characterized by IR and NMR spectroscopy and single crystal X-ray diffraction. The analysis of the crystal packing of the title compound and its analog, bearing a nitro group instead of a nitrile one, allowed a ...
Kyrill Yu. Suponitsky   +1 more
doaj   +1 more source

Novel energetic furazans containing isomeric N-(azoxy)-dinitropyrazole moieties: Synthesis, characterization and comparison of properties

open access: yesEnergetic Materials Frontiers, 2023
Novel energetic furazans 3a–3c and 4a–4c containing isomeric (3,4-dinitro-1H-pyrazol-1-yl)-NNO-azoxy and (3,5-dinitro-1H-pyrazol-1-yl)-NNO-azoxy moieties have been obtained. A synthetic approach to aminofurazans 3a and 4a involves the reaction of 1-amino-
Alexey A. Konnov   +10 more
doaj   +1 more source

Recent advances on the nitrogen-rich 1,2,4-oxadiazole-azoles-based energetic materials

open access: yesDefence Technology, 2022
This review covers recent advances in the synthesis and energetic performance of nitrogen-rich 1,2,4-oxadiazole-azoles-based energetic materials. These materials comprise of 1,2,4-oxadiazole subunit as a key structural motif linked to different nitrogen ...
Wen-Li Cao   +4 more
doaj   +1 more source

Schiff bases containing a furoxan moiety as potential nitric oxide donors in plant tissues. [PDF]

open access: yesPLoS ONE, 2018
Stable Schiff bases containing a furoxan moiety are synthesized as single regioisomers by the reaction of 3-methyl-2-oxy-furazan-4-carbaldehydewith various amino compounds at room temperature.
Emilian Georgescu   +9 more
doaj   +1 more source

Nitraza‐/Oxa‐Propylene‐ and Hydrazonemethylene‐Bridged 1,2,4‐Nitraminotriazoles and Selected Salts

open access: yesEuropean Journal of Organic Chemistry, Volume 26, Issue 24, June 21, 2023., 2023
Two new nitraminotriazoles were synthesized with nitrazapropylene and oxapropylene bridging moieties. Based on those triazoles, as well as the hydrazonemethylene bridged nitraminotriazole, several salts were prepared. By using comprehensive analytical methods and theoretical calculations, their physical and energetic properties were determined and ...
Alexander G. Harter   +4 more
wiley   +1 more source

Tricyclic compounds with 1,4,2,5-dioxadiazine bridged triazoles and pyrazoles as potential energetic materials

open access: yesEnergetic Materials Frontiers, 2023
In this study, two energetic molecules with 1,4,2,5-dioxadiazine as a bridge were created by adding triazoles and pyrazoles to the oxazine skeleton. The structural characteristics, thermal behavior, and explosive properties of the obtained compounds 3,6 ...
Cong-cong Ge   +3 more
doaj   +1 more source

Self Cycloaddition of o‐Naphthoquinone Nitrosomethide to (±) Spiro{naphthalene(naphthopyranofurazan)}‐one Oxide: An Insight into its Formation

open access: yesChemPlusChem, Volume 87, Issue 12, December 2022., 2022
2‐Hydroxy‐1‐naphthaldehyde oxime was oxidized by a D−A type self cycloaddition to spiro compound. Free reaction energy is calculated at −82.0 kcal/mol indicating its predominance over the intramolecular cyclization of −37.6 kcal/mol. 8‐methoxy substituted oxime is sterically guided to 9‐methoxynaphtho[1,2‐d] instead of spiro adduct resulting to the ...
Demeter Tzeli   +4 more
wiley   +1 more source

Combining triazole and furazan frameworks via methylene bridges for new insensitive energetic materials

open access: yesEnergetic Materials Frontiers, 2020
High-performance energetic materials require good balance between energy and safety, which may be achieved through structural design. Herein, an energetic compound containing a furazan-triazole backbone linked by methylene bridges and a systematic series
Jieyi Chen   +4 more
doaj   +1 more source

Novel Segregated Solid Propulsion System with Separately Stored Fuel and Oxidizer

open access: yesPropellants, Explosives, Pyrotechnics, Volume 47, Issue 11, November 2022., 2022
Abstract The development and experimentation of a solid propulsion concept consisting of separate hydrogen‐rich solid propellant and solid oxidizer grains is presented. This system consists of an extremely fuel‐rich solid propellant, which, once ignited, undergoes a self‐sustaining decomposition to release fuel‐rich product gases, which are ...
Joseph P. Lichthardt   +6 more
wiley   +1 more source

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