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 Найдено в других БД:Труды сотрудников Института органического синтеза УрО РАН (17)
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1.
Инвентарный номер: нет.
   
   A 10


   
    A new approach to fluorinated 4(1H)-quinazolinones [Electronic resource] / A. A. Layeva, E. V. Nosova, G. N. Lipunova, T. V. Trashakhova, V. N. Charushin // Journal of Fluorine Chemistry. - 2007. - Vol. 128, № 7. - P748-754
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A new approach for the synthesis of fluorinated 1H-quinazolin-4-ones and 4-substituted quinazolines has been developed. 6-Fluoro-1H-quinazolin-4-ones were obtained by intramolecular cyclization of fluorine-containing S-ethyl N-benzoylisothioureas. Nucleophilic substitution reactions at positions 2 and 7, as well as alkylation at 1-position of quinazolinones were investigated. In addition, the synthesis of fluorine-containing 4-aminoquinazolines was carried out.

\\\\Expert2\\nbo\\Journal of Fluorine Chemistry\\2007, v.128. p.748.pdf
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2.
Инвентарный номер: нет.
   


   
    2,3-Dichloro-1-alkylpyrazinium tetrafluoroborates: the synthesis and reactions with nucleophiles [Electronic resource] / G. L. Rusinov, P. A. Slepukhin, V. N. Charushin, O. N. Chupakhin // Mendeleev Communications. - 2001. - Vol. 11, № 2. - P78-80
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The alkylation of 2,3-dichloropyrazine with the Meerwein reagents afforded 1-alkyl-2,3-dichloropyrazinium tetrafluoroborates, which were transformed into mono.mono- or disubstitution products, while the reaction of these salts with 1,4-N,Xdinucleophiles resulted in fused heterocyclic systems

\\\\expert2\\nbo\\Mendeleev Communications\\2001, v.11, N 2. p.78.pdf
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3.
Инвентарный номер: нет.
   
   F 70


   
    Fluorine-containing quinazolines annulated at the pyrimidine ring [Electronic resource] / E. V. Nosova, A. A. Laeva, T. V. Trashakhova, G. N. Lipunova, P. A. Slepukhin, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2009. - Vol. 58, № 6. - P1303-1308
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Fluorine-containing quinazolines annulated at the sides [a] and [c] were synthesized by the reaction of 2- and 4-hydrazino-substituted quinazolines with aldehydes and subsequent oxidative cyclization. Annulation at the side [b] was performed by alkylation of 2-alkylthio-4(3H)-quinazolinones with bromoethanol and ipso-substitution of the alkylthio group

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2009, 58 (6), 1303-1308.pdf
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4.
Инвентарный номер: нет.
   
   R 30


   
    Reactions of azinium cations. 8. Electron structures of 3-substituted 1,2,4-triazines and protonation, quaternization, and reactions with nucleophiles [Electronic resource] / S. G. Alekseev, P. A. Torgashev, M. A. Fedotov, A. I. Rezvukhin, S. V. Shorshnev, A. V. Belik, V. N. Charushin, O. N. Chupakhin // Chemistry of Heterocyclic Compounds. - 1988. - Vol. 24, № 4. - С. 434-441. - Bibliogr. : p. 440-441 (34 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
1,2,4-TRIAZINES -- NUCLEOPHILES
Аннотация: The electron structures of 3-substituted 1,2,4-triazines and isomeric N-methyltriazinium salts were calculated by the CNDO/2 method. The results of the calculations were compared with the parameters of the 13C, 15N, and 14N NMR spectra, as well as with experimental data on the protonation, N-alkylation, and reactions of 1,2,4-triazines with simple nucleophiles. The protonation centers of 1,2,4-triazines were determined by means of 1H, 13C, and 14N NMR spectroscopy. The covalent adducts formed by the proton salts of 3-methoxy-, 3-methylthio-, 3-morpholino-, and 3-pyrrolidino-1,2,4-triazine with water and methanol were recorded by 1H NMR spectroscopy.

\\\\expert2\\nbo\\Chemistry of Heterocyclic Compounds\\1988, v.24, N 4, p. 434.pdf
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5.
Инвентарный номер: нет.
   
   Q 32


   
    Quaternization of pyrido[2,3-b]pyrazines: 1H and 13C NMR Study [Electronic resource] / O. N. Chupakhin, V. N. Charushin, A. I. Chernyshev, S. E. Esipov // Magnetic Resonance in Chemistry. - 1985. - Vol. 23, № 6. - С. 437-441. - Bibliogr. : p. 441 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
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.
Инвентарный номер: нет.
   


   
    Novel pentafluorophenyl- and alkoxyphenyl-appended 2,2'-bipyridine push-pull fluorophores: a convenient synthesis and photophysical studies / T. D. Moseev, E. A. Nikiforov, M. V. Varaksin [et al.] // Synthesis. - 2021. - Vol. 53, № 19. - P3597-3607
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
2,2′-BIPYRIDINES -- 1,2,4-TRIAZINES -- POLYFLUOROARENES
Аннотация: A convenient method for the synthesis of new highly in non-polar solvents soluble photoactive pentafluorophenyl-substituted and extended alkoxyphenyl-substituted 2,2′-bipyridines is reported. The synthetic strategy for the preparation of such ligands involves a sequence of several structural transformations, such as O-alkylation, nucleophilic substitution of hydrogen (SN H) in 1,2,4-triazine precursors via the ‘addition–elimination’ scheme, and the subsequent conversion of the obtained 1,2,4-triazines into 2,2′-bipyridines by means of the aza-Diels–Alder reaction. The photophysical properties of the synthesized novel pentafluoroaryl-substituted 2,2′-bipyridines were comprehensively studied. The obtained photophysical data indicate the competitive advantages of the herein reported pentafluoroarylated push–pull fluorophores, bearing extended aliphatic moieties, over their analogues containing benzoxy or phenolic fragments in terms of improvement in quantum yield and well-pronounced positive solvatochromism confirmed by the mathematical analysis according to the Lippert–Mataga equation.

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