- Synthesis and spectral parameters of tetra(6-tert-butyl-2,3-quinoxalino) porphyrazine and its metal complexes
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Tetra(6-tert-butyl-2,3-quinoxalino)porphyrazine and its complexes with bivalent metals were synthesized for the first time by template tetramerization of 6-tert-butylquinoxaline-2,3-dicarbonitrile. The obtained macrocyclic compounds are soluble in hydroph
- Efimova,Korzhenevskii,Koifman
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- Synthesis and spectral properties of octacyanopyrazinoporphyrazine and its metallocomplexes
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Octacyanopyrazinoporphyrazine was for first time synthesized by template tetramerization of tetracyanopyrazine, and its complexes with bivalent metals were prepared. The compounds obtained were characterized by MALDI-TOF mass spectral data, elemental anal
- Belozerova, Yu. I.,Efimova,Korzhenevskii,Koifman
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- Synthesis and Investigation of 2,3,5,6-Tetra-(1H-tetrazol-5-yl)pyrazine Based Energetic Materials
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The structures and properties of several energetic compounds based on a high-nitrogen-content anion, namely 2,3,5,6-tetra(1H-tetrazol-5-yl)pyrazine (H4TTP) are reported here for the first time. These energetic salts were synthesized by reacting H4TTP with various alkali metal hydroxides (sodium, potassium, rubidium, caesium) and N-based (ammonia, hydrazine, hydroxylamine, guanidine carbonate, aminoguanidine bicarbonate). The resulting materials were comprehensively characterized by multinuclear (1H, 13C) NMR spectroscopy, infrared spectroscopy, elemental analysis, DSC, as well as low-temperature single-crystal X-ray diffraction. Heats of formation for the metal-free species as well as detonation parameters were calculated. The presented energetic materials (EMs) show high thermal stability (207 °C≤Tdec≤300 °C), while the metal-free ionic derivatives exhibit desirable properties such as detonation velocity (6873 m s?1≤VC-J≤8364 m s?1), detonation pressure (14.3 GPa≤pC-J≤24.9 GPa), and specific impulse (141.4≤Isp≤192.5 s).
- Witkowski, Tomasz G.,Richardson, Paul,Gabidullin, Bulat,Hu, Anguang,Murugesu, Muralee
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- IRON AMINO COMPLEX AND METHOD OF PRODUCING THE SAME
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PROBLEM TO BE SOLVED: To provide a novel iron amino complex, and a method of producing the same. SOLUTION: An iron amino complex is obtained by mixing an iron compound with a compound having two amino groups and two nitrile groups in solvent. COPYRIGHT: (C)2015,JPO&INPIT
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Paragraph 0046
(2016/12/12)
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- Facile synthesis of hydrazine derivatives of 5H-pyrrolo[3,4-b]pyrazine and 1H-pyrrolo[3,4-b]quinoxaline
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A convenient and efficient route for the chemoselective synthesis of carbohydrazide, arenesulfonylhydrazide, and thiosemicarbazone derivatives of 5H-pyrrolo[3,4-b]pyrazine and 1H-pyrrolo[3,4-b]quinoxaline from the corresponding dinitriles and substituted hydrazines was elaborated. The synthesis of starting pyrazine-2,3-dicarbonitrile was sufficiently improved by using concentrated HCl as a catalyst. Georg Thieme Verlag Stuttgart . New York.
- Hordiyenko, Olga V.,Rudenko, Igor V.,Zamkova, Irina A.,Denisenko, Oleksandr V.,Biitseva, Angelina V.,Arrault, Axelle,Tolmachev, Andrei A.
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p. 3375 - 3382
(2014/01/06)
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