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Общее количество найденных документов : 115
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1.
Инвентарный номер: нет.
   
   K 96


    Kuzueva, O. G.
    Synthesis of 2-arylhydrazones of aliphatic fluorine-containing 1,2,3-tricarbonyl compounds and their reactions with dinucleophiles [Electronic resource] / O. G. Kuzueva, Ya. V. Burgart, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1998. - Vol. 47, № 4. - P673-678
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: New fluorinated 2-arylhydrazones of 1,2,3-tricarbonyl compounds were obtained by coupling fluorine-containing 3-oxo esters, 1,3-diketones, and their copper chelates with aryldiazonium chlorides. Reactions of these arylhydrazones with hydrazine hydrate, phenylhydrazine, thiosemicarbazide, and hydroxylamine gave the corresponding pyrazole and isoxazole derivatives

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1998, 47 (4), 673.pdf
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2.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of fluorinated 2(3)-arylhydrazones of 1,2,3-tri(1,2,3,4-tetra)carbonyl compounds and their heterocyclization reactions [] / Ya. V. Burgart, A. S. Fokin, O. G. Kuzueva, O. N. Chupakhin, V. I. Saloutin // Journal of Fluorine Chemistry. - 1998. - Vol. 92, № 2. - С. 101-108
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: New fluorinated 2-arylhydrazones of 1,2,3-triketones, 2-arylhydrazone-1,2,3-diketo esters and 3-arylhydrazone-1,2,3,4-triketo esters have been prepared by the coupling of fluorine-containing 1,3-keto esters, 1,3-diketones, acyl(aroyl)pyruvic esters and their chelates with aryldiazonium chlorides. The arylhydrazones react with hydrazine hydrate, phenylhydrazine, thiosemicarbazide and hydroxylamine to form the corresponding pyrazole and isoxazole derivatives. Interaction of 3-arylhydrazone-1,2,3,4-diketo esters with o-phenylenediamine results in quinoxaline products. Intramolecular cyclization of the arylhydrazones with pentafluorophenyl substituents leads to cinnolone derivatives

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3.
Инвентарный номер: нет.
   
   F 98


   
    Fused fluoroquinolones: synthesis and 1H and 19F NMR studies [Text] / V. N. Charushin, E. V. Nosova, G. N. Lipunova, M. I. Kodess // Journal of Fluorine Chemistry. - 2001. - Vol. 110, № 1. - P25-30. - Bibliogr. : p. 30 (19 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: New derivatives of fused fluoroquinolones bearing five aromatic rings have been obtained. The 19F NMR spectra of these pentacyclic fluoroquinolones demonstrate unusual through space 1H–19F and 19F–19F spin–spin interactions with coupling constants 6J(F, H)=2.0–3.0 Hz, 7J(F, F)=3.5–4.0 Hz and 9J(F, H)=3.0–3.5 Hz. Relative reactivities of fluorine atoms in pentacyclic fluoroquinolones in the amino-defluorination reactions are also different relative to bi- and tricyclic fluoroquinolones????

\\\\Expert2\\nbo\\Journal of Fluorine Chemistry\\2001.v.110. p. 25.pdf
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4.
Инвентарный номер: нет.
   
   D 62


   
    Direct modification of benzoannelated crown ethers with 1,2,4-triazin-5(2H)-one moieties [Text] / G. L. Rusinov, D. G. Beresnev, N. A. Itsikson, O. N. Chupakhin // Heterocycles. - 2001. - Т. 55, № 12. - P2349-2359
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient method for one-step coupling of benzoannelated crown ethers with 1,2,4-triazinones based on the reaction of nucleophilic addition to unsubstituted carbon atom of the triazine ring has been worked out. It has been shown that the reaction of 3-substituted 1,2,4-triazin-5(2H)-ones (1) with benzocrown ethers (benzo-12-crown-4, benzo-15-crown-5, benzo-18-crown-6) in the presence of acetic or trifluoroacetic anhydride is accompanied by acylation of triazine ring and results in formation of 3-(1-acyl-5-oxo-1,4,5,6-tetrahydro-1,2,4-triazin-6-yl)benzocrown ethers (7-12). The latters were converted to 3-(5-oxo-2,5-dihydro-1,2,4-triazin-6-yl)benzocrown ethers (18-20) using two alternative routes: the elimination of acetic or trifluoroacetaldehyde or the deacylation followed by the oxidation of the 1,4,5,6-tetrahydro derivatives (13-15).

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5.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis and hydroxydeamination in the series of 6-aryl- and 6-benzoimidazolyl-7-aminoazolo[5,1-c]-1,2,4-triazines [Electronic resource] / E. N. Ulomskii, S. L. Deev, T. S. Sheshukova, V. L. Rusinov, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2002. - Vol. 51, № 9. - P1737-1743
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The replacement of the amino group with the hydroxy group was examined in the series of 6-aryl- and 6-benzoimidazolyl-7-aminoazolo[5,1-c]-1,2,4-triazines. These reactions provide a convenient synthetic procedure for the preparation of fused azolo[5,1-c]-1,2,4-triazin-7-ones

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2002, 51 (9), 1737.pdf
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6.
Инвентарный номер: нет.
   
   P 93


   
    Protolytic Equilibria of Some N,N-Bis(2-carboxyethyl)aminoazobenzenesulfonic Acids in Aqueous Solution [Electronic resource] / Yu. A. Skorik, L. K. Neudachina, A. V. Osintsev, Yu. G. Yatluk, A. A. Vshivkov, E. V. Osintseva // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2002. - Vol. 38, № 3. - P385-389
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 4-[4-Bis(2-carboxyethyl)aminophenylazo]benzenesulfonic acid and 4-[2-bis(2-carboxyethyl)amino-4,5-dimethylphenylazo]benzenesulfonic acid were synthesized for the first time by azo coupling of diazosulfanilic acid with N,N-bis(2-carboxyethyl)aniline and N,N-bis(2-carboxyethyl)-3,4-xylidine, respectively. The acid ionization constants of the products were determined, their electron absorption spectra were measured, and schemes of acid-base equilibria in aqueous solution were proposed

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2002, 38 (3), 385.pdf
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7.
Инвентарный номер: нет.
   
   S 73


    Sosnovskikh, V. Ya.
    2-Polyfluoroalkylchromones. 12. Nitration of 5,7-dimethyl-2-polyhaloalkylchromones and complete assignment of signals in the 1H and 13C NMR spectra of 5,7-dimethyl-2-trifluoromethylchromone and its mono- and dinitro derivatives [Electronic resource] / V. Ya. Sosnovskikh, B. I. Usachev, M. I. Kodess // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2002. - Vol. 51, № 10. - P1817-1828
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The nitration of 5,7-dimethyl-2-polyhaloalkylchromones affords either 5,7-dimethyl-6-nitro- or 5,7-dimethyl-6,8-dinitro-2-polyhaloalkylchromones, depending on the reaction conditions. Signals in the 1H and 13C NMR spectra of the sterically hindered chromones were completely assigned using the 2D NOESY, HETCOR, and COLOC spectra. The influence of nonplanar nitro groups on chemical shifts of carbon atoms was studied. Some spectral peculiarities of the peri-methyl group were revealed. The 1H-1H and 13C-1H spin-spin coupling constants, including the extreme six-bond long-range coupling between the protons of the Me(5) group and H(8), were determined

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2002, 51 (10), 1817.pdf
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8.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of Functionalized Fluorescent Europium(III) Terpyridyl Chelates [Text] / V. N. Kozhevnikov, D. N. Kozhevnikov, V. L. Rusinov, O. N. Chupakhin, B. Konig // Synthesis. - 2003. - № 15. - P2400-2404. - Bibliogr. : p. 2404 (19 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
DIELS-ALDER REACTION -- HETEROCYCLES -- LANTHANIDE -- LIGANDS -- PYRIDINES -- EUROPIUM
Аннотация: The synthesis of substituted terpyridines via triazine intermediates is described. The intermediates allow the facile introduction of cyano groups, which are converted into amino diacetic acid moieties. Together with the terpyridine nitrogen atoms they shield coordinated europium(III) ions completely from the solvent. The terpyridines may be further functionalized for specific applications using ligands, bromo substituents, and standard transition metal mediated coupling methods. This makes the title compounds valuable intermediates for the preparation of luminescent probes in biochemistry, medicinal diagnostics or materials science.

\\\\Expert2\\nbo\\Synthesis\\2003, v.15. p.2400.Chupakhin.pdf
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9.
Инвентарный номер: нет.
   
   D 62


   
    Direct C-C coupling of hetarenes with macrocycles [Text] : доклад, тезисы доклада / O. N. Chupakhin, G. L. Rusinov, D. G. Beresnev, N. A. Itsikson // XVII Менделеевский съезд по общей и прикладной химии, Казань, 21-26 сентября 2003 г. : тез. стенд. докл. - Казань, 2003. - P85
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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10.
Инвентарный номер: нет.
   
   A 18


   
    Acid-promoted direct C-C coupling of 1,3-diazines and 1,2,4-triazines with aryl-containing macrocyclic compounds and their open-chain analogues [Text] / N. A. Itsikson, D. G. Beresnev, G. L. Rusinov, O. N. Chupakhin // ARKIVOC. - 2004. - № 12. - P6-13. - Библиогр. : с. 12 (13 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A method of direct C-C coupling of azahetarenes with macrocycles (calix[4]arene, benzo-12-??crown-4, 1,5-bis(2,6-dimethylphenoxy)-3-oxapentane), based on the nucleophilic addition to ??unsubstituted carbon atom in azines, has been developed.

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