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 Найдено в других БД:Каталог книг и продолжающихся изданий (6)Каталог препринтов УрО РАН (1975 г. - ) (1)Публикации об УрО РАН (1)Труды Института высокотемпературной электрохимии УрО РАН (8)Труды сотрудников Института органического синтеза УрО РАН (55)Труды сотрудников Института теплофизики УрО РАН (4)Труды сотрудников Института химии твердого тела УрО РАН (1)Расплавы (4)
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Общее количество найденных документов : 13
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1.
Инвентарный номер: нет.
   
   C 78


   
    Copper and Copper Oxides Nanopowders in the Oxidative Condensations of Phenylacetylene and Tert-Butylacetylene [Electronic resource] / O. A. Kuznetsova, E. F. Khmara, V. I. Filyakova, M. A. Uimin, A. E. Ermakov, C. K. Rhee, V. N. Charushin // Russian Journal of General Chemistry. - 2007. - Vol. 77, № 3. - P404-408. - Библиогр. : с. 408 (12 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Transformations of phenylacetylene and tert-butylacetylene in the presence of copper and copper oxide (Cusub2/subO, CuO) nanopowders prepared by gas-phase condensation of copper in argon were studied. The reaction of phenylacetylene with copper oxide nanopowders having different phase compositions in the absence of a solvent at room temperature resulted in oxidative condensation of phenylacetylene and complex formation of the condensation product. The complex undergoes decomposition by the action of acids, bases, and compounds capable of forming complexes. According to the X-ray diffraction data, one of the products is a new “parquet” modification of diphenyldiacetylene. Under analogous conditions, tert-butylacetylene gave rise to a complex mixture of products among which di- tert-butyldiacetylene was identified by gas chromatography-mass spectrometry. No copper complexes with the tert-butylacetylene condensation products were detected.

\\\\expert2\\nbo\\Russian Journal of General Chemistry\\2007, V. 77, N 3, p.404.pdf
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2.
Инвентарный номер: нет.
   
   K 46


   
    Kinetic resolution of heterocyclic amines by reaction with optically active acid chlorides. The effect of reaction conditions on the diastereoselectivity of acylation of (±)-3-methyl-2,3-dihydro-4H-1,4-benzoxazine [Electronic resource] / V. P. Krasnov, G. L. Levit, M. A. Koroleva, I. M. Bukrina, L. Sh. Sadretdinova, I. N. Andreeva, V. N. Charushin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 6. - P1253-1256
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The influence of the reaction conditions (solvent, base) on the diastereoselectivity of acylation of (±)-3-methyl-2,3-dihydro-4H-1,4-benzoxazine with (S)-naproxen and N-tosyl-(S)-proline chlorides was studied. The highest diastereoselectivity was observed for the reaction carried out in benzene in the presence of aliphatic tertiary amines

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (6), 1253.pdf
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3.
Инвентарный номер: нет.
   
   A 19


   
    Acylative kinetic resolution of racemic amines using N-phthaloyl-(S)-amino acyl chlorides [Text] / D. A. Gruzdev, G. L. Levit, V. P. Krasnov, E. N. Chulakov, L. Sh. Sadretdinova, A. N. Grishakov, M. A. Ezhikova, M. I. Kodess, V. N. Charushin // Tetrahedron: Asymmetry . - 2010. - Vol. 21, № 8. - P936-942
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A comparative study of the kinetic resolution of racemic 2-methyl-1,2,3,4-tetrahydroquinoline and 2,3-dihydro-3-methyl-4H-1,4-benzoxazine using N-phthaloyl-(S)-amino acyl chlorides as chiral acylating agents is described. Temperature and solvent effects on the stereochemical features have been examined. It has been found that N-phthaloyl-(S)-phenylalanyl and N-phthaloyl-(S)-2-phenylglycyl chlorides bearing aromatic substituents close to the stereogenic centre are more stereoselective acylating agents than N-phthaloyl-(S)-alanyl chloride. For the preparative kinetic resolution of racemic amines N-phthaloyl-(S)-phenylalanyl chloride proved to be the most appropriate chiral acylating agent

\\\\Expert2\\nbo\\Tetrahedron Asymmetry\\2010, v. 21, p.936.pdf
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4.
Инвентарный номер: нет.
   
   S 70


   
    Solvent-free synthesis of pillar[6]arenes [Electronic resource] / S. Santra, D. S. Kopchuk, I. S. Kovalev, G. V. Zyryanov, A. Majee, V. N. Charushin, O. N. Chupakhin // Green Chemistry. - 2016. - Vol. 18, № 2. - С. 423-426. - Bibliogr. : p. 426 (16 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PILLAR[6]ARENES -- SOLVENT-FREE PROCEDURE
Аннотация: An efficient solvent-​free procedure for the synthesis of pillar[6]arenes has been developed. The procedure involves the solid-​state condensation of finely milled 1,​4-​dialkoxybenzene and paraformaldehyde by grinding in the presence of a catalytic amt. of H2SO4. The use of org. solvents for the extn. of products has also been avoided. Operational simplicity, compatibility with various 1,​4-​dialkoxybenzenes, non-​chromatog. purifn. technique, high yields and mild reaction conditions are the notable advantages of this procedure. A large scale reaction demonstrated the practical applicability of this methodol.

\\\\expert2\\NBO\\Green Chemistry\\2016, v.18, N 2, p.423.pdf
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5.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis, photochemical and luminescent properties of (E)-2-(2-hydroxyarylethylene)-3-phenylquinazolin-4(3H)-ones [Electronic resource] / I. G. Ovchinnikova, G. A. Kim, E. G. Matochkina, M. I. Kodess, N. V. Barykin, O. S. Eltsov, E. V. Nosova, G. L. Rusinov, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2015. - Vol. 63, № 11. - С. 2467-2477. - Bibliogr. : p. 2477 (22 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
(E)-2-STYRYLQUINAZOLIN-4(3H)-ONES -- LUMINESCENCE -- ORTHO-HYDROXYSTYRYLQUINAZOLINONES
Аннотация: Photoinduced transformations of 2-styrylquinazolinones in solutions were studied using absorption and NMR spectroscopy methods. A possibility of control of the photochemical isomerization rate of quinazolinone 2-(hydroxyaryl)ethenyl derivatives by changing the pH of the medium was demonstrated. The bases and the solvent nature also affect the luminescence intensity of solutions of these compounds in the wavelength range of 550-650 nm. The differences in the steric organization of the ortho-hydroxystyryldiazinone system in crystals and in solutions related to the turn of the aryl group were found. Their influence on the competing processes of luminescence and photochemical transformation of the ethylene fragment were shown. The fact of reversible photo/thermal E-Z-isomerization was established for (E)-2-(2-hydroxystyryl)-3-phenylquinazolin-4(3H)-one.

\\\\expert2\\nbo\\Russian Chemical Bulletin\\2015, 63 (11), 2467-2477.pdf
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6.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis, Photophysical and Redox Properties of the D-pi-A Type Pyrimidine Dyes Bearing the 9-Phenyl-9H-Carbazole Moiety [Electronic resource] / E. V. Verbitskiy [и др.] // Journal of Fluorescence. - 2015. - Vol. 25, № 3. - С. 763-775. - Bibliogr. : p. 774-775 (51 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIMIDINES -- CARBAZOLE -- DYE-SENSITIZED SOLAR CELLS
Аннотация: Novel donor-pi-acceptor dyes bearing the pyrimidine unit as an electron-withdrawing group have been synthesized by using combination of two processes, based on the microwave-assisted Suzuki cross-coupling reaction and nucleophilic aromatic substitution of hydrogen. Spectral properties of the obtained dyes in six aprotic solvents of various polarities have been studied by ultraviolet-visible and fluorescence spectroscopy. In contrast to the absorption spectra, fluorescence emission spectra displayed a strong dependence from their solvent polarities. The nature of the observed long wavelength maxima has been elucidated by means of quantum chemical calculations. The electrochemical properties of these dyes have been investigated by using cyclic voltammetry, while their photovoltaic performance was evaluated by a device fabrication study. The experimental and calculation data show that all of the dyes can be regarded as potentially good photosensitizers for dye-sensitized solar cells.

\\\\expert2\\nbo\\Journal of Fluorescence\\2015, v.25, p.763-775.pdf
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7.
Инвентарный номер: нет.
   
   R 74


   
    Role of polar solvents for the synthesis of pillar[6]arenes [Electronic resource] / S. Santra, I. S. Kovalev, D. S. Kopchuk, G. V. Zyryanov, A. Majee, V. N. Charushin, O. N. Chupakhin // RSC Advances. - 2015. - Vol. 5, № 126. - С. 104278-104282. - Bibliogr. : p. 104282 (26 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
HOST-GUEST COMPLEXATION -- WATER CHANNELS -- HIGH-YIELD SYNTHESIS
Аннотация: An efficient procedure for the synthesis of pillar[6]arenes has been developed. The procedure involves the condensation of 1,4-dialkoxybenzenes and paraformaldehyde in the presence of a catalytic amount of H2SO4 or BF3 center dot OEt2 in polar solvent media (acetonitrile, ethyl alcohol, acetone etc.). In all cases the interaction afforded pillar[6]arenes in high yields.

\\\\expert2\\nbo\\RSC Advances\\2015. Vol. 5, N 126. P. 104278-104282.pdf
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8.
Инвентарный номер: нет.
   
   A 10


   
    A decade update on solvent and catalyst-free neat organic reactions: a step forward towards sustainability [Electronic resource] / A. Sarkar, S. Santra, S. K. Kundu, G. V. Zyryanov, O. N. Chupakhin, V. N. Charushin, A. Majee // Green Chemistry. - 2016. - Vol. 18, № 16. - С. 4475-4525
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
ONE-POT SYNTHESIS -- DIELS-ALDER REACTIONS -- ELECTRON-DEFICIENT OLEFINS
Аннотация: Particular success has been achieved in the synthesis of new products and in processes since the twelve principles of "green chemistry" were formulated in the 1990s. These products and processes are more compatible with human health, society, and the environment. In this review, a collection of research reports have been documented from the viewpoint of green chemistry. The main theme of this review is neat reactions, which are solvent and catalyst-free reactions. Neat reactions in the absence of any solvent or catalyst with concise summaries of microwave, ball milling, and neat reactions have been described.

\\\\expert2\\NBO\\Green Chemistry\\2016, v.18, N 16, p.4475.pdf
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9.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis and properties of new π-conjugated imidazole/carbazole structures / R. A. Irgashev, N. A. Kazin, N. I. Makarova, I. V. Dorogan, V. V. Malov, A. R. Tameev, G. L. Rusinov, A. V. Metelitsa, V. I. Minkin, V. N. Charushin // Dyes and Pigments. - 2017. - Vol. 141. - P512-520
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
IMIDAZOLES -- CARBAZOLES -- ABSORPTION SPECTRA -- PHOTOLUMINESCENCE -- TDDFT CALCULATIONS -- CHARGE MOBILITY
Аннотация: New 3-(1H-imidazol-2-yl)-9H-carbazoles and 6,6′-di(1H-imidazol-2-yl)-9H,9′H-3,3′-bicarbazoles have been prepared, starting from 9-ethyl-9H-carbazole-3-carbaldehyde or 9,9′-diethyl-9H,9′H-[3,3′-bicarbazole]-6,6′-dicarbaldehyde through their reactions with 4-methoxyaniline or 4-fluoroaniline, benzil or 2,2′-thenil [1,2-di(thien-2,2′-yl) glyoxal] and ammonium acetate on reflux in glacial acetic acid. The obtained compounds have been shown to demonstrate an effective fluorescence in the blue spectral region, exhibiting quantum yields in the range of 0.08–0.51, depending on their molecular structure and solvent polarity. The nature of the observed absorption spectra has been elucidated by the TDDFT calculations.

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10.
Инвентарный номер: нет.
   
   S 70


   
    Solvent-free synthesis of 5-(aryl/alkyl)amino-1,2,4-triazines and α-arylamino-2,2′-bipyridines with greener prospects / D. S. Kopchuk, N. V. Chepchugov, I. S. Kovalev, S. Santra, M. Rahman, G. V. Zyryanov, V. N. Charushin, O. N. Chupakhin, K. Giri, A. Majee // RSC Advances. - 2017. - Vol. 7, № 16. - P9610-9619
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A green and highly efficient method has been developed for the synthesis of 5-(aryl/alkyl)amino-1,2,4-triazines and a-arylamino-2,20-bipyridines according to the principles of atom economy. It has been performed by two consecutive solvent-free reaction pathways: the ipso-substitution of a cyano-group in 5-cyano-1,2,4-triazines and the aza-Diels-Alder reaction of the resulting 5-arylamino-1,2,4-triazines with 1-morpholinocyclopentene used as a dienophile. Solvent and catalyst-free conditions, operational simplicity, the compatibility with various functional groups, nonchromatographic purification technique, and high yields are the notable advantages of this procedure. The present methodology possesses a low E-factor.

\\\\Expert2\\NBO\\RSC Advances\\2017 v.7 p.9610-9619.pdf
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11.
Инвентарный номер: нет.
   


   
    Синтез 5-метил-1,2,4-триазоло[1,5-a]пиримидин- 7(4H)-она в сверхкритическом диоксиде углерода / А. В. Баклыков, Г. Л. Русинов, В. Л. Русинов, В. Н. Чарушин, Д. С. Копчук, Г. В. Зырянов, Г. А. Артемьев // Журнал общей химии. - 2019. - Т. 89, № 1. - С. 138-140
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
5-МЕТИЛ-1,2,4-ТРИАЗОЛО[1, 5-A]ПИРИМИДИН-7(4H)-ОН -- СУПЕРКРИТИЧЕСКИЙ CO2 -- СИНТЕЗ В ОТСУТСТВИЕ РАСТВОРИТЕЛЯ -- 5-METHYL-1,2,4-TRIAZOLO[1, 5-A]PYRIMIDINE-7(4H)-ONE -- SUPERCRITICAL CO2 -- SOLVENT-FREE SYNTHESIS
Аннотация: 5-Метил-1,2,4-триазоло[1,5- a ]пиримидин-7(4 H )-он - полупродукт в синтезе антивирусного препарата Триазид® - был впервые получен в сверхкритическом CO2 (200 бар) в отсутствие растворителей путем циклоконденсации 5-амино-3- Н -1,2,4-триазола с ацетоуксусным эфиром в присутствии каталитических количеств ZnCl2 с конверсией 90% в зависимости от температуры и времени реакции.

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12.
Инвентарный номер: нет.
   


   
    Synthesis of 2-imidazolines by co-grinding of n-tosylaziridines and nitriles / A. De, A. Majee, S. Santra [et al.] // Mendeleev Communications. - 2020. - Vol. 30, № 2. - P188-189
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
2-IMIDAZOLINES -- AZIRIDINES -- GRINDING -- HETEROCYCLIZATION -- NITRILES -- SOLVENT-FREE REACTIONS
Аннотация: Solvent-free solid-state co-grinding of N-tosylaziridines and nitriles in the presence of perchloric acid as the catalyst affords 2-imidazolines in good yields.

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13.
Инвентарный номер: нет.
   


   
    Abnormal push-pull benzo[4,5]imidazo[1,2-a][1,2,3]triazolo[4,5-e]pyrimidine fluorophores in planarized intramolecular charge transfer (PLICT) state: Synthesis, photophysical studies and theoretical calculations / O. S. Taniya, V. V. Fedotov, L. K. Sadieva [et al.] // Dyes and Pigments. - 2022. - Vol. 204. - Ст. 110405
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The combination of excellent luminescence with high solvent polarity effect and aggregation induced emission (AIE) is an ideal combination for creating fluorophores/probes with high microenvironmental sensitivity. However, many push-pull chromophores of the D−A type in common intramolecular charge transfer (ICT) state with a significant solvatochromic effect and AIE activity, have poor luminescent properties. Herein, to overcome this problem by using reactions of nucleophilic aromatic hydrogen substitution (SNH), we have designed a series of novel 4-heteroaryl-substituted 2-aryl-2H-benzo[4,5]imidazo[1,2-a][1,2,3]triazolo[4,5-e]pyrimidine fluorophores possessing a planarized intramolecular charge transfer (PLICT) state. All these fluorophores exhibited high luminescence quantum yields (up to 60%) and large Stokes shift values of up to 7459 cm−1. Among them, the fluorophore 4h was found to exhibit the most pronounced positive solvatochromic effect and the probe 4f exhibited the most pronounced aggregation induced emission characteristics. This AIE behavior was further confirmed by means of time-resolved fluorescence lifetime measurements as well as DFT-assisted geometry optimization studies. In the presence of trifluoroacetic acid (TFA) compound 4h exhibited a well-pronounced acidochromism via visible color change from yellow-green to orange which returned to the original yellow-green solution after the addition of triethylamine (TEA). The Stern-Volmer constant for the probe 4h towards TFA was 38 M−1. Finally, for the compounds 4f, g, h theoretical calculations in the ground and excited states in different solvents were carried out to confirm the PLICT process. Based on all above the herein reported PLICT fluorophores 4a-h can be successfully applied as biological probes and optical switches.

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