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1.

Вид документа : Статья из журнала
Шифр издания : 54/T 82
Автор(ы) : Slepukhin P. A., Rusinov G. L., Dedeneva S., Charushin V. N.
Заглавие : Transformations of 8-substituted tetrazolo[1,5-a]pyrazines [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2007. - Vol. 56, № 2. - С. 345-350
Систем. требования: http://www.springerlink.com/content/px2u383631p78074/fulltext.pdf
Примечания : 26.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reactions of 8-chlorotetrazolo[1,5-a]pyrazine with N-, O-, and S-nucleophiles involve the ipso substitution of the chlorine atom. Heating of this compound with benzotriazole or phenyltetrazole results in elimination of the nitrogen molecule from one of the tetrazole rings to form new annelated azapentalenes
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2007, 56 (2), 345.pdf
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chupakhin O. N., Musikhina A. A, Utepova I. A., Charushin V. N., Rempel A. A., Pryakhina V. I., Zyryanova E. Y., Pershina S. V., Yolshina L. A., Vovkotrub E. G.
Заглавие : Synthesis and properties of azines functionalized graphene with extremely high adsorptive ability to Eu3+ ions
Место публикации : Flatchem. - 2022. - Vol. 33. - С. 100348
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: In this work, a versatile synthetic protocol for obtaining of new promising carbon materials based on the C–C coupling of graphenide lithium species with azaaromatic compounds (1,10-phenanthroline, phenyl-1,2,5-oxadiazolo[3,4-b]pyrazine) has been suggested. It was shown that more electrophilic oxadiazolopyrazine gave the product with high degree of graphene functionalization and demonstrated non-isomorphic properties. At the same time, phenanthrolinyl graphene has less functionalization degree due to a lower electrophilicity of azine. However, the large size of pores between organic residues in phenanthrolinyl graphene allows adsorbing almost 10% of Eu3+. The mesurment of adsorption isotherm showed an extremely high affinity of phenanthrolinylgraphene to Eu (III) ions in netural or alkaline conditions, and the obtained hybrid material could work at least 5 sorption/desorption cycles. The structures of azine-graphene dyads were verified by complex of modern physicochemical analyses methods (the Raman spectroscopy, FTIR, XPS, SEM, EDS and TGA analyses).
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Verbitskiy E. V., Kvashnin Y. A., Zhilina E. F., Shchepochkin A. V., Rusinov G. L., Chupakhin O. N., Charushin V. N., Baranova A. A., Khokhlov K. O., Chuvashov R. D., Schapov I. E., Yakovleva Y. A., Makarova N. I., Vetrova E. V., Metelitsa A. V.
Заглавие : Synthesis and characterization of linear 1,4-diazine-triphenylamine–based selective chemosensors for recognition of nitroaromatic compounds and aliphatic amines
Место публикации : Dyes and pigments. - 2020. - Vol. 178. - С. 108344
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): aliphatic amines--fluorescence quenching--nitroaromatic compounds--pyrazine--quinoxaline--solvatochromism
Аннотация: Novel 1,4-diazine-based dyes of the D–π–A type, possessing triphenylamine as an electron-donating group, have been developed. Fluorescence studies have demonstrated that emission of these fluorophores is sensitive towards different nitroaromatic compounds and aliphatic amines, both in solutions and in a vapor phase. Moreover, these compounds can be considered as “naked-eye” fluorescent probes for solution polarity because they possess pronounced solvatochromic properties. Therefore, these compounds have to be regarded as potential multifunctional chemosensors for monitoring hazardous organic substances.
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4.

Вид документа : Статья из журнала
Шифр издания : 54/R 30
Автор(ы) : Verbitskiy E. V., Slepukhin P. A., Ezhikova M. A., Kodess M. I., Rusinov G. L., Charushin V. N.
Заглавие : Reactions of sigma(H)-adducts of 1-ethyl-1,4-diazinium salts with arylalkynes as a one-step approach to pyrrolo[1,2-a]pyrazine derivatives [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2009. - Vol. 58, № 6. - С. 1291-1293
Систем. требования: http://www.springerlink.com/content/30140045p8115192/fulltext.pdf
Примечания : 27.10.2011 г.
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The O- and C-adducts of 5-aryl and 5-hetaryl-2,3-dicyano-1-ethylpyrazinium salts are hidden sources of ylides, which can be used for the cyclization with arylacetylenes giving rise to pyrrolo[1,2-a]pyrazines
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2009, 58 (6), 1291-1293.pdf
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5.

Вид документа : Статья из журнала
Шифр издания : 54/Q 32
Автор(ы) : Chupakhin O. N., Charushin V. N., Chernyshev A. I., Esipov S. E.
Заглавие : Quaternization of pyrido[2,3-b]pyrazines: 1H and 13C NMR Study [Электронный ресурс]
Место публикации : Magnetic Resonance in Chemistry. - 1985. - Vol. 23, № 6. - С. 437-441
Систем. требования: http://onlinelibrary.wiley.com/doi/10.1002/mrc.1260230607
Примечания : Bibliogr. : p. 441 (20 ref.). - 26.10.15
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): n-methylpyrido[2,3-b]pyrazinium salts--pyrido[2,3-b]pyrazines
Аннотация: The structure of N-methylpyrido[2,3-b]pyrazinium salts has been examined by 1H and 13C NMR. 6-Dimethylamino- and 6-morpholino-pyrido[2,3-b]pyrazines were shown to undergo quaternization by methyl iodide at N-4 of the pyrazine ring, whereas the pyridine ring N-5 was the N-alkylation site in the reaction of unsubstituted pyrido[2,3-b]pyrazine with methyl iodide under the same conditions. The effects of quaternization on the 1H and 13C chemical shifts and the nJ(CH) values are discussed.
\\\\expert2\\nbo\\Magnetic Resonance in Chemistry\\1985, v.23, N 6, p.437.pdf
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Verbitskiy E. V., Kvashnin Y. A., Rusinov G. L., Charushin V. N., Le Poul P., Achelle S., Bures F., Barsella A.
Заглавие : Push–pull derivatives based on 2,4'-biphenylene linker with quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine electron withdrawing parts
Место публикации : Molecules. - 2022. - Vol. 27, № 13. - Ст.4250
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A series of novel V-shaped quinoxaline, [1,2,5]oxadiazolo[3,4-b]pyrazine and [1,2,5]thiadiazolo[3,4-b]pyrazine push–pull derivatives with 2,4′-biphenylene linker were designed and their electrochemical, photophysical and nonlinear optical properties were investigated. [1,2,5]Oxadiazolo[3,4-b]pyrazine is the stronger electron-withdrawing fragment as shown by electrochemical, and photophysical data. All compounds are emissive in a solid-state (from the cyan to red region of the spectrum) and quinoxaline derivatives are emissions in DCM solution. It has been found that quinoxaline derivatives demonstrate important solvatochromism and extra-large Stokes shifts, characteristic of twisted intramolecular charge transfer excited state as well as aggregation induced emission. The experimental conclusions have been justified by theoretical (TD-)DFT calculations.
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7.

Вид документа : Статья из журнала
Шифр издания : 54/N 50
Автор(ы) : Zhilina E. F., Chizhov D. L., Sidorov A. A., Aleksandrov G. G., Kiskin M., Slepukhin P. A., Fedin M., Charushin V. N.
Заглавие : Neutral tetranuclear Cu(II) complex of 2,6-di(5-trifluoromethylpyrazol-3-yl)pyridine: Synthesis, characterization and its transformation with selected aza-ligands
Место публикации : Polyhedron. - 2013. - Vol.53. - С. 122-131
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Ключевые слова (''Своб.индексиров.''): copper (ii) complex--x-ray--magnetic properties
Аннотация: New tetranuclear Cu(II) complex [Cu4(L)4]·MeCN (1) with 2,6-di(5-trifluoromethyl-1H-pyrazol-3-yl)pyridine (H2L) was synthesized. It has been shown that treatment of 1 with selected aza-ligands (pyridine, 2,2′- and 4,4′-bipyridyl, 2,3,5,6-tetra-(pyridine-2-yl)pyrazine, 2,2′;6′,2″-terpyridine and 1,4-diazabicyclo[2.2.2]octane) leads to formation of other Cu(II) complexes with different nuclearity: [Cu(L)py2] (2), [Cu(L)(2,2′-bpy)] (3), [Cu(L)2(tppz)]·THF (5), [Cu(L)tpy]·C6H5CN (4), {[Cu2(L)2(4,4′-bpy)2]·(C6H5CH3)·MeCN}n (6) and {[Cu(L)DABCO]·2MeCN}n (7). Obtained compounds were characterized by IR spectroscopy, X-ray crystallography data, EPR and SQUID magnetic measurements. --------------------------------------------------------------------------------
\\\\Expert2\\NBO\\Polyhedron\\2013. v.53. p.122.pdf
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8.

Вид документа : Статья из журнала
Шифр издания : 54/M 81
Автор(ы) : Slepukhin P. A., Rusinov G. L., Charushin V. N., Filyakova V. I., Karpenko N. S., Krivolapov D. B., Litvinov I. A.
Заглавие : Mono- and diadducts and bicyclic adducts in reactions of 2,3-dicyano-1-ethylpyrazinium cation with C- and O-nucleophiles [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 6. - С. 1272-1278
Систем. требования: http://www.springerlink.com/content/n38224246w24226l/fulltext.pdf
Примечания : 24.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Products of diaddition of O- and C-nucleophiles to the 2,3-dicyano-1-ethylpyrazinium cation were isolated for the first time. The tandem AN—AN reactions of 2,3-dicyano-1-ethylpyrazinium tetrafluoroborate with 1,3-diketone enolates or keto esters afforded tetrahydrofuro[2,3-b]pyrazine derivatives, whereas cyclization with ethylene glycol gave tetrahydro-1,4-dioxino[2,3-b]pyrazine. Crystallographic data on the three-dimensional structures of these compounds were reported
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (6), 1272.pdf
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Kvashnin Yu. A., Verbitskiy E. V., Rusinov G. L., Charushin V. N.
Заглавие : Modification and application of 1,2,5-oxadiazolo[3,4-b]pyrazine derivatives: highlights and perspectives
Место публикации : Russian chemical bulletin. - 2022. - Vol. 71, № 7. - С. 1342-1362
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
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10.

Вид документа : Статья из журнала
Шифр издания : 54/I-83
Автор(ы) : Slepukhin P. A., Rusinov G. L., Charushin V. N., Kodess M. I., Chupakhin O. N.
Заглавие : ipso- and tele-Substitution in reactions of 3-chloro-1-ethyl-2-R-pyrazinium salts with C-nucleophiles [Electronic resource]
Место публикации : Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2003. - Vol. 52, № 3. - С. 689-694
Систем. требования: http://www.springerlink.com/content/u0663261q8lv4w42/fulltext.pdf
Примечания : 26.10.2011
ББК : 54
Предметные рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The reactions of 2,3-dichloro- and 3-chloro-1-ethyl-2-morpholinopyrazinium tetrafluoroborates with compounds containing the active methylene group were studied. The reactions with malonodinitrile and cyanoacetic ester afford products of ipso-substitution at position 2, while 1,3-dicarbonyl compounds produce products of tele-substitution of the Cl atom at the C(3) atom due to the attack of a nucleophile to position 6 of the pyrazine cycle
\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2003, 52 (3), 689.pdf
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