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Общее количество найденных документов : 45
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 1-10    11-20   21-30   31-40   41-45 
1.
Инвентарный номер: нет.
   
   C 47


    Charushin, V. N.
    Metal Free C-H Functionalization of Aromatics. Nucleophilic Displacement of Hydrogen / V. N. Charushin, O. N. Chupakhin. - [Б. м.] : Springer International Publishing Switzerland, 2014. - 283 с. - ISBN 1861-9282 : Б. ц.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
AROMATIC COMPOUNDS -- AROMATIC NUCLEOPHILES

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2.
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   C 57


    Chupakhin, O. N.
    Nucleophilic aromatic substitution of hydrogen [Text] : научное издание / O. N. Chupakhin, V. N. Charushin, Henk C. van der Plas. - [S. l.] : Academic Press, 1994. - 376p. - Б. ц.
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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3.
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   H 62


   
    Heteroacenes Bearing the Pyrimidine Scaffold: Synthesis, Photophysical and Electrochemical Properties [Electronic resource] / E. V. Verbitskiy [и др.] // European Journal of Organic Chemistry. - 2016. - Vol. 2016, № 7. - С. 1420-1428
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIMIDINE SCAFFOLD -- PERIMIDINE SYSTEMS -- BORONIC ACIDS
Аннотация: A convenient synthetic route to novel 7-​substituted benzo[f]​thieno[3,​2-​h]​quinazoline and 8-​substituted benzo[g,​h]​dithieno[2,​3-​e:3',​2'-​j]​perimidine systems, bearing the fused pyrimidine ring, has been advanced. A com. available 5-​bromopyrimidine was used as the starting material to obtain various polycyclic systems through the sequence of nucleophilic arom. substitution of hydrogen (the SNH reaction)​, Suzuki cross-​coupling and oxidative photocyclization. Evidence for the structure of benzo[g,​h]​dithieno[2,​3-​e:3',​2'-​j]​perimidines has been obtained by X-​ray crystallog. anal. MO calcns. (DFT)​, as well as redox and optical measurements for all new compds. have been performed. The data show that the reported polycyclic systems have potential for use in org. electronic applications. The synthesis of the target compds. was achieved using 5-​bromo-​4-​(2-​thienyl)​pyrimidine and (phenyl)​boronic acids as starting materials.

\\\\expert2\\NBO\\European Journal of Organic Chemistry\\2016, № 7, p. 1420-1428.pdf
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4.
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   A 10


   
    A new route towards dithienoquinazoline and benzo[f]thieno[3,2-h]quinazoline systems using Pd-catalyzed intramolecular cyclization under microwave irradiation [Electronic resource] / E. V. Verbitskiy, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // ARKIVOC. - 2016. - № 4. - С. 204-216
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIMIDINES -- INTRAMOLECULAR CYCLIZATIONS -- FUSED RING SYSTEMS -- THIENOACENES
Аннотация: A novel synthetic route to novel thienoacene systems bearing a fused pyrimidine ring is proposed. The commercially available 5-bromopyrimidine is used as the starting material to obtain various dithienoquinazoline and benzo[f]thieno[3,2-h] quinazoline systems through the Suzuki cross-coupling, nucleophilic aromatic substitution of hydrogen (the S-N(H) reaction), and finally palladium-catalyzed intramolecular cyclization under microwave irradiation. Redox properties of some of the new compounds have been investigated. The data obtained show that these systems have plausible potential for use in organic electronic applications.

\\\\expert2\\NBO\\ARKIVOC\\2016, p.204-216.pdf
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5.
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   S 98


   
    Synthesis and evaluation of antitubercular activity of fluorinated 5-aryl-4-(hetero)aryl substituted pyrimidines [Электронный ресурс] / E. V. Verbitskiy, S. A. Baskakova, M. A. Kravchenko, S. N. Skornyakov, G. L. Rusinov, O. N. Chupakhin, V. N. Charushin // Bioorganic and Medicinal Chemistry. - 2016. - Vol. 24, № 16. - С. 3771-3780
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
PYRIMIDINE -- ANTIMYCOBACTERIAL ACTIVITY -- TUBERCULOSIS
Аннотация: Various 5-(fluoroaryl)-4-(hetero)aryl substituted pyrimidines have been synthesized based on the Suzuki cross-coupling and nucleophilic aromatic substitution of hydrogen (S-N(H)) reactions starting from commercially available 5-bromopyrimidine and their antitubercular activity against Mycobacterium tuberculosis H(37)Rv has been explored. The outcome of the study disclose that, some of the compounds have showed promising activity in micromolar concentration against Mycobacterium tuberculosis H(37)Rv, Mycobacterium avium, Mycobacterium terrae, and multidrug-resistant strains isolated from tuberculosis patients in Ural region (Russia). The data concerning the 'structure-activity' relationship for fluorinated compounds have been discussed

\\\\expert2\\NBO\\Bioorganic and Medicinal Chemistry\\2016, V.24, N 16, p.3771-3780.pdf
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6.
Инвентарный номер: нет.
   
   C 57


    Chupakhin, O. N.
    Recent advances in the field of nucleophilic aromatic substitution of hydrogen [Electronic resource] / O. N. Chupakhin, V. N. Charushin // Tetrahedron Letters. - 2016. - Vol. 57, № 25. - С. 2665-2672
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
C-H FUNCTIONALIZATION -- S-N(H) METHODOLOGY -- OXIDATIVE ALKYLAMINATION
Аннотация: Recent advances in the filed of direct C-H functionalization of aromatics and heteroaromatics through nucleophilic displacement of hydrogen in an aromatic ring are discussed

\\\\expert2\\NBO\\Tetrahedron Letters\\2016, v. 57, p. 2665.pdf
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7.
Инвентарный номер: нет.
   
   C 10


   
    C-H functionalization of triazolo[a]-annulated 8-azapurines [Electronic resource] / E. B. Gorbunov, G. L. Rusinov, E. N. Ulomskii, V. L. Rusinov, V. N. Charushin, O. N. Chupakhin // Tetrahedron Letters. - 2016. - Vol. 57, № 21. - С. 2303-2305
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
FUSED PYRIMIDINES -- C-H FUNCTIONALIZATION -- 8-AZAPURINES
Аннотация: Direct C-H functionalization of triazolo[a]-annulated 8-azapurines with phenol ethers or thiophene has been performed using the oxidative nucleophilic displacement of a hydrogen on the pyrimidine ring, proceeding through the intermediacy of the corresponding sigma(H)-adducts.

\\\\expert2\\NBO\\Tetrahedron Letters\\2016, v. 57, p. 2303.pdf
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8.
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   D 62


   
    Direct arylalkenylation of furazano[3,4-b]pyrazines via a new C-H functionalization protocol [Electronic resource] / N. A. Kazin, Yu. A. Kvashnin, R. A. Irgashev, W. Dehaen, G. L. Rusinov, V. N. Charushin // Tetrahedron Letters. - 2015. - Vol. 56, № 14. - С. 1865-1869. - Bibliogr. : p. 1869 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
NUCLEOPHILIC-SUBSTITUTION -- DERIVATIVES -- HYDROGEN
Аннотация: 6-Styryl-5-(het)arylfurazano[3,4-b]pyrazines have been obtained by novel C-H functionalization, which is a particular case of the nucleophilic substitution of hydrogen (S-N(H)). The process is initiated by the Michael addition of morpholine at the C=C double bond of beta-nitrostyrenes, and the subsequent addition of the generated carbanion to C-6 of 5-(het)arylfurazano[3,4-b]pyrazines, followed by elimination of nitrous acid and morpholine. It has been shown that in this case, only beta-nitrostyrenes bearing electron-rich substituents on the aromatic ring are involved in arylalkenylation of furazano[3,4-b]pyrazines

\\\\expert2\\nbo\\Tetrahedron Letters\\2015, v. 56, p. 1865.pdf
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9.
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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10.
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   A 23


   
    Aerobic oxidative C-H/C-H coupling of azaaromatics with indoles and pyrroles in the presence of TiO2 as a photocatalyst [Electronic resource] / I. A. Utepova, M. A. Trestsova, O. N. Chupakhin, V. N. Charushin, A. A. Rempel // Green Chemistry. - 2015. - Vol. 17, № 8. - С. 4401-4410. - Bibliogr. : p. 4409-4410 (30 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
BOND ACTIVATION -- INHIBITORS -- HYDROGEN
Аннотация: In this paper we wish to report a highly selective and benign method for the double C-H/C-H coupling of azaaromatics with indoles or pyrrole in the presence of air oxygen/TiO2, as an effective photocatalytic oxidative system. It has been shown that this versatile approach can be applied for direct C-H functionalisation of a variety of azaaromatic systems, such as mono-, di- and triazines, substituted and unsubstituted azines and their benzo-annelated analogues.

\\\\expert2\\nbo\\Green Chemistry\\2015, v.17, N 8, p.4401-4410.pdf
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