Центральная Научная Библиотека УрО РАН

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   N 89


    Novel 1-trifluoromethyl substituted 1,2-ethylenediamines and their use for the synthesis of fluoroquinolones [Text] / A. Y. Aizikovich, M. V. Nikonov, M. I. Kodess, V. Yu. Korotaev, V. N. Charushin, O. N. Chupakhin // Tetrahedron. - 2000. - Vol. 56, N 13. - P1923-1927

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A common approach to the synthesis of 1-trifluoromethyl-1,2-ethylenediamines was deweloped. Based on these original building blocks the new derivatives of N-substituted fluoroquinolones bearing the trifluoromethyl group were obtined

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   S 98


    Synthesis of stereoisomers of 2,4-diaminoglutaric and 2,5-diaminoadipic acids [Electronic resource] / V. P. Krasnov, E. A. Zhdanova, M. A. Koroleva, I. M. Bukrina, M. I. Kodess, V. K. Kravtsov, V. N. Biyushkin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1997. - Vol. 46, N 2. - P319-323

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Stereoisomers of 2,4-diaminodlutaric and 2,5-diaminoadipic acids were synthesized from dlutamic and 2-aminoadipic acids, respectively. The stereochemistry of the products was established by IH NMR spectroscopy and X-ray analysis

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1997, 46 (2), 319-323.pdf
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   T 44


    The structure of 4-phenyl-2,6-bis(trifluoroacetyl)cyclohexanone and its dilithium salt in the crystal state, solution and gas phase [Electronic resource] / D. V. Sevenard, O. Kazakova, E. Lork, T. Duelcks, D. L. Chizhov, G. -V. Roeschenthaler // Journal of Molecular Structure. - 2007. - Vol. 846, № 1-3. - P87-96

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 4-Phenyl-2,6-bis(trifluoroacetyl)cyclohexanone and its dilithium salt were synthesized starting from the commercially available 4-phenylcyclohexanone. With X-ray structure analysis of these compounds, for the first time the solid state structure determination for a fluorinated 1,3,5-triketone and an alkaline salt of 1,3,5-triketone was achieved. The subsequent multinuclear NMR and MS investigations revealed that in solution and gas phase, analogously to the crystal, both compounds exist predominantly in a highly delocalized double U-enol(ate) form. The carbonyl O…O distances in the dilithium salt were established to be considerably longer than the distances between oxygens of the parent 1,3,5-triketone, bonded by strong (short) resonance assisted hydrogen bonds. Among the 1,3,5-tricarbonyl compounds with known crystal structure, the entitled 1,3,5-triketone shows comparatively weak delocalization over the conjugated bis-enolone backbone.

\\\\Expert2\\nbo\\Journal of Molecular Structure\\2007, v.846, p.87.pdf
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   A 18


    Acidic hydrolysis of N-acyl-1-substituted 3-amino-1,2-dicarba-closo-dodecaboranes [Electronic resource] / G. L. Levit, A. M. Demin, M. I. Kodess, M. A. Ezhikova, L. Sh. Sadretdinova, V. A. Ol'shevskaya, V. N. Kalinin, V. P. Krasnov, V. N. Charushin // Journal of Organometallic Chemistry. - 2005. - Vol. 690, № 11. - P2783-2786

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Acidic hydrolysis of N-acyl 1-methyl- and 1-phenyl-3-amino-1,2-dicarba-closo-dodecaboranes has been studied. It has been shown that acidic hydrolysis of diastereomeric amides of 1-methyl-3-amino-1,2-dicarba-closo-dodecaborane results in the partial racemization of the target 3-amino-1-methylcarborane. Under the similar conditions, the hydrolysis of N-acyl-3-amino-1-phenyl-1,2-dicarba-closo-dodecaboranes resulted in amide bond cleavage accompanied by simultaneous deboronation with the removal of boron atom at position 6 of carborane cage and formation of 7,8-dicarba-nido-undecaborane derivative according to 11B and 1H NMR spectroscopy.

\\\\Expert2\\nbo\\Journal of Organometallic Chemistry\\2005, v. 690, p.2783.pdf
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   N 72


    NMR determination of enantiomeric composition of 1-substituted 3-amino-1,2-dicarba-closo-dodecaboranes using Eu(hfc)3 [Electronic resource] / M. I. Kodess, M. A. Ezhikova, G. L. Levit, V. P. Krasnov, V. N. Charushin // Journal of Organometallic Chemistry. - 2005. - Vol. 690, № 11. - P2766-2768

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Experimental conditions for determination of enantiomeric composition of 1-substituted 3-aminocarboranes by 1H and 13C NMR spectroscopy using chiral shift reagent Eu(hfc)3 have been found.

\\\\Expert2\\nbo\\Journal of Organometallic Chemistry\\2005, v. 690, p.2766.pdf
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   S 98


    Synthesis, structure and luminescence of ruthenium complexes with 6-cyano-2,2'-bipyridines [Electronic resource] / V. N. Kozhevnikov, D. N. Kozhevnikov, O. V. Shabunina, V. L. Rusinov, O. N. Chupakhin, M. Zabel, B. Koenig // Mendeleev Communications. - 2005. - Vol. 15, № 1. - P6-8

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The crystallographic data, NMR and UV-VIS spectra and luminescence of the heteroleptic complexes [Ru(L)(bpy)2](PF6)2 (L = 5-aryl-6-cyano-2,2'-bipyridine) are described.

\\\\Expert2\\nbo\\Mendeleev Communications\\2005, v.15,p.6.pdf
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   S 89


    Structure and properties of 4-amino derivatives of 5-oxoproline [Text] / V. P. Krasnov, I. A. Nizova, A. Yu. Vigorov, T. V. Matveeva, G. L. Levit, P. A. Slepukhin, M. A. Ezhikova, M. I. Kodess // European Journal of Organic Chemistry. - 2008. - № 10. - P1802-1810

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: On the basis of the results obtained from NMR spectroscopy, X-ray analysis and chemical transformations, it was established that acidic hydrolysis of (2S,4S)-4-arylaminoglutamates results in the formation of lactams in which ring closure occurs with the participation of the Y-amino and alfa-COOH groups; but isomeric lactams resulting from the participation of the alfa-amino and Y-COOH groups are not formed. Isomeric lactams, that is, (2S,4S)-4-arylamino-5-oxoprolines, can be easily converted in acidic medium into more stable 4-amino-1-aryl-5-oxoprolines.

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   S 98


    Synthesis and the reactions of trifluoromethylated 1,2,3-triketones 2-(het)arylhydrazones and 4,7-dihydroazolo[5,1-c]triazines [Electronic resource] / O. G. Khudina, E. V. Shchegol'kov, Ya. V. Burgart, M. I. Kodess, O. N. Kazheva, A. N. Chekhlov, G. V. Shilov, O. A. Dyachenko, V. I. Saloutin, O. N. Chupakhin // Journal of Fluorine Chemistry. - 2005. - Vol. 126, № 8. - P1230-1238

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The coupling of trifluoromethylated 1,3-diketones with (het)aryldiazonium chlorides results mainly in the formation of 1,2,3-triketones 2-(het)arylhydrazones while using hetarylamine with a NH-group at the ?-position of the heterocycle as the diazonium component gives 4,7-dihydroazolo[5,1-c]triazines due to cyclization at the trifluoroacetyl fragment. Trifluoromethylated 1,2,3-triketones 2-(het)arylhydrazones and 7-hydroxy-4,7-dihydroazolo[5,1-c]triazines react regio-selectively with methyl hydrazine and phenyl hydrazine to form 3-CF3-pyrazoles. The long-range coupling constants (JF-H) of 1-methylpyrazoles and the chemical shifts of trifluoromethyl groups in the 19F NMR spectra can be used for the determination of regio-isomeric structures of mono(trifluoromethyl)-substituted pyrazoles. 2-(Het)arylhydrazones and 4,7-dihydroazolo[5,1-c]triazines with two trifluoromethyl substituents afford the mixtures of cis- and trans-azopyrazoles in the reactions with hydrazines.

\\\\Expert2\\nbo\\Journal of Fluorine Chemistry\\2005, v.126, p.1230.pdf
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   A 53


    An Unusually easy oxidative dequaternization of N-alkyl-1,2,4-triazinium salts [Electronic resource] / O. N. Chupakhin, B. V. Rudakov, P. McDermott, S. G. Alexeev, V. N. Charushin, F. Hegarty // Mendeleev Communications. - 1995. - Vol. 5, № 3. - P104-105

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Unusually easy dequaternization has been found to occur on treatment of 1-alkyl-3-morpholino-5-phenyl-1,2,4-triazinium iodides with triethylamine in alcohol or acetone solutions at room temperature; a plausible reaction mechanism has been advanced on the basis of NMR and kinetic studies

\\\\expert2\\nbo\\Mendeleev Communications\\1995, v.5, N 3. p.104.pdf
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10.

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    5(6)-Fluoro-6(5)-R-benzofuroxans: synthesis and NMR 1H, 13C and 19F studies [Text] / S. K. Kotovskaya, S. A. Romanova, V. N. Charushin, M. I. Kodess, O. N. Chupakhin // Journal of Fluorine Chemistry. - 2004. - Vol. 125, № 3. - P421-428 : ил. - Библиогр.: с. 428 (14 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
5,6-DIFLUOROBENZOFUROXAN -- NUCLEOPHILIC SUBSTITUTION -- X-RAY CRYSTALLOGRAPHY
Аннотация: 5(6)-Fluoro-6(5)-substituted benzofuroxans were obtained by the reactions of 5,6-difluorobenzofuroxan with a number of nucleophiles, such as alkylamines, cycloalkylimines, sodium azide and sodium alkoxides. The features of tautomerism in the series of asymmetrical 5(6)-fluorobenzofuroxans in acetone solutions have been studied by 1H, 13C and 19F NMR.????

\\\\Expert2\\nbo\\Journal of Fluorine Chemistry\\2004, v.125, p.421.pdf
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11.

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   S 98


    Syntheses of novel 4-polyfluoroalkyl-substituted 5,6-oligomethylene pyrimidines [Text] / D. V. Sevenard, O. G. Khomutov, O. V. Koryakova, V. V. Sattarova, M. I. Kodess, J. Stelten, I. Loop, E. Lork, K. I. Pashkevich, G. -V. Roeschenthaler // Synthesis. - 2000. - № 12. - P1738-1748

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 2-Acylcycloalkanones having polyfluoroalkyl groups react with guanidine, urea, thiourea, methylisothiourea, benzamidine, guanylthiourea, dicyanodiamide, and trifluoroacetylurea by Lewis-acid catalysis to form the corresponding 5,6-oligomethylene pyrimidines. A decrease in the yields along with increase of polyflyoroalkyl substituent length in the molecule of the starting 1,3-diketone was observed in the case of reagents with lower nucleophilicity (urea, thiourea, dicyanodiamide). The pyrimidines obtained from aromatic aldehydes showed E-configuration with respect to the arylidene double bond. Tautomeric structures as a function of the substituent in 2 position in the pyrimidine ring both in liquid and solid state were investigated by X-ray diffraction, IR and NMR spectroscopy.

\\\\expert2\\nbo\\Synthesis\\2000, № 12. p.1738.pdf
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12.

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   H 10


    H-1 and C-13-NMR investigations on-adduct formation of 1,2,4-triazine 4-oxides and 3-chloro-6-phenyl-1,2,4-triazine with liquid ammonia and alkylamines [Text] / A. Rykowski, O. N. Chupakhin, D. N. Kozhevnikov, V. N. Kozhevnikov, V. L. Rusinov, der Plas H. C. Van // Heterocycles. - 2001. - Т. 55, № 1. - P127-133

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 1H- and 13C-NMR spectra of the ?-adducts formed between 6-phenyl-1,2,4-triazine 4-oxide (1a), 3-ethyl-6-phenyl-1,2,4-triazine 4-oxide (1b) and liquid ammonia, methylamine or dimethylamine are described, together with 1H NMR spectra of 3-chloro-6-phenyl-1,2,4-triazine (7) in liquid ammonia. The results of the NMR study have shown that the carbon C-5 in 1a-b and 7 is the preferred site for nucleophilic attack by liquid ammonia and alkylamines at low temperatures (from -75° to -20°C). The ?-adduct (5e) formed between 1a and dimethylamine at -75°C on heating to -20°C irreversibly converts to open-chain product (3a), via intermediary C-3 ?-adduct (6). The amination of 7 into 3-amino-6-phenyl-1,2,4-triazine (10) occurs via SN(AE) mechanism involving the isomerisation of the C-5 ?-adduct (8) into the C-3 ?-adduct (9) as confirmed by a 15N study with labeled liquid ammonia.

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13.

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   N 10


    N-(2-Carboxyethyl)chitosans: Regioselective synthesis, characterisation and protolytic equilibria [Text] / Yu. A. Skorik, C. A. R. Gomes, M. T.S.D. Vasconcelos, Yu. G. Yatluk // Carbohydrate Research. - 2003. - Vol. 338, № 3. - P271-276

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
CARBOXYETHYLATION POLYSACCHARIDES -- N-(2-CARBOXYETHYL)CHITOSAN -- POLYAMPHOLYTE
Аннотация: N-(2-Carboxyethyl)chitosans were obtained by reaction of low molecular weight chitosan with a low degree of acetylation and 3-halopropionic acids under mild alkaline media (pH 8-9, NaHCO3) at 60°C. The chemical structure of the derivatives obtained was determined by 1H and 13C NMR spectroscopies. It was found that alkylation of chitosan by 3-halopropionic acids proceeds exclusively at the amino groups. The products obtained are described in terms of their degrees of carboxyethylation and ratio of mono-, di-substitution and free amine content. The protonation constants of amino and carboxylate groups of a series of N-(2-carboxyethyl)chitosans were determined by pH-titration at ionic strength 0.1 M KNO3 and 25°C. © 2002 Elsevier Science Ltd. All rights reserved.

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14.

Инвентарный номер: нет.

   R 30


    Reaction of 5-halo-1,2,3-thiadiazoles with aliphatic diamines. Synthesis and intramolecular cyclization of bis(1,2,3-triazolyl-1,2,3-thiadiazolyl)sulfides [Text] / N. N. Volkova, E. V. Tarasov, M. I. Kodess, L. Van Meerlent, W. Dehaen, V. A. Bakulev // Organic and Biomolecular Chemistry. - 2003. - Vol. 1, № 22. - P4030-4038

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Bis[1,2,3]triazolo[1,5-f:5?,1?-b][1,3,6]thiadiazepine and [1,5-g:5?,1?-b][1,3,7]thiadiazocine ring systems have been synthesized from 5-halo-1,2,3-thiadiazoles and aliphatic diamines. We have found that the last step of the process is the cyclization of initially formed bis(1,2,3-triazolyl-1,2,3-thiadiazolyl)sulfides. The structures of the intermediates and products were supported by different NMR spectroscopic methods (1H coupled 13C NMR, 2D HETCOR, HMBC and 1D INADEQUATE experiments) and mass spectrometry. Differences in the reaction pathway for aliphatic and less nucleophilic aromatic diamines were determined.

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15.

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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16.

Инвентарный номер: нет.

   S 98


    Synthesis and Tautomeric Equilibrium of Polyfluoroacyl-Containing 1,5-Benzodiazepines [Text] / D. S. Yachevskii, D. L. Chizhov, M. I. Kodess, K. I. Pashkevich // Monatshefte fur Chemie . - 2004. - Vol. 135, № 1. - P23-30 : ил. - Библиогр.: с. 30 (8 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
NMR -- TAUTOMERISM -- SYNTHESIS
Аннотация: The reaction of bis(polyfluoroalkyl)-containing 1,3,5-triketones with o-phenylenediamine yielded 2-polyfluoroacylmethylene-4-polyfluoroalkyl-1,3- or 1,5-dihydro-1,5-benzodiazepines. The tautomeric equilibrium of the obtained benzodiazepines in CDCl3, CD3CN, DMSO, and DMF solution was studied.??

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17.

Инвентарный номер: нет.

   R 30


    Reactions of radicals generated from 1-ethyl-1,4-diazinium salts: Addition to the C-C triple bond versus dimerization [Text] / G. L. Rusinov, E. V. Verbitskiy, P. A. Slepukhin, O. N. Zabelina, M. I. Kodess, M. A. Ezhikova, V. N. Charushin, O. N. Chupakhin // Heterocycles. - 2009. - Vol. 78, № 9. - P2315-2324

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Radical species generated from 5-aryl-substituted 1-ethyl-2,3-dicyano-1,4-diazinium salts by action of sodium iodide undergo dimerization into [2,2?]bipyrazinyl derivatives, as evidenced by NMR and X-ray crystallography data. The pyrazinyl radicals can also be involved into the addition reaction on the C-C triple bond, thus demonstrating a new synthetic route to modify the structure of pyrazines. The structures of E- and Z-isomers of 1-(1?,2?-dihydropyrazinyl-2?)-2-iodoethenes have been proved by 1H and 13C NMR spectroscopy and X-ray analysis

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18.

Инвентарный номер: нет.



    1H NMR evidence for 5(4H)-oxazolones formation and racemization [Text] : доклад, тезисы доклада / O. N. Chupakhin, V. P. Krasnov, A. M. Demin, G. L. Levit, M. I. Kodess // XXth European Colloquium on Heterocyclic Chemistry, Stockholm,Sweden, 18-21 Aug. 2002 г. - Stockholm, 2002. - C:2

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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19.

Инвентарный номер: нет.

   D 98


    Dynamic kinetic resolution via 5(4H)-oxazolone formation [Text] : доклад, тезисы доклада / O. N. Chupakhin, V. P. Krasnov, N. Z. Solieva, E. A. Zhdanova, I. M. Bukrina, L. Sh. Sadretdinova, G. L. Levit, M. I. Kodess // XXth European Colloquium on Heterocyclic Chemistry, Stockholm,Sweden, 18-21 Aug. 2002 г. - Stockholm, 2002. - C:3

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

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20.

Инвентарный номер: нет.

   G 37


    Geometric isomerism in the series of fluoroalkyl-containing 1,2,3-trione 2-arylhydrazones [Electronic resource] / O. G. Khudina, E. V. Shchegol'kov, M. I. Kodess, Ya. V. Burgart, V. I. Saloutin, O. N. Chupakhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2007. - Vol. 43, № 3. - P380-387

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
2-ARYLHYDRAZONES -- X-RAY DIFFRACTION
Аннотация: According to the 1H, 13C, and 19F NMR data, fluoroalkyl-containing 1,2,3-trione 2-arylhydrazones in CDCl3 exist exclusively, while in (CD3)2CO preferentially, as isomers in which the acyl or aroyl group is involved in intramolecular hydrogen bond. The isomer structure was assigned on the basis of the chemical shifts of the carbonyl carbon atoms and fluorine atoms and carbon-fluorine spin-spin coupling constants J C-F. X-Ray diffraction data showed that 1,2,3-trione 2-arylhydrazones in crystal have the same structure as in CDCl3 solution. Quantum-chemical calculations were performed to rationalize predominant formation of 1,2,3-trione 2-arylhydrazone isomers with a free polyfluoroacyl group

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2007, 43 (3), 380-387.pdf
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21.

Инвентарный номер: нет.

   S 98


    Synthesis and structure of 2-ethoxy- and 2-aminomethylidene-3-fluoroalkyl-3-oxopropionates [Electronic resource] / M. V. Pryadeina, Ya. V. Burgart, V. I. Saloutin, P. A. Slepukhin, O. N. Chupakhin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2007. - Vol. 43, № 7. - P945-955

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Condensation of ethyl 3-polyfluoroalkyl-3-oxopropionates with excess triethyl orthoformate gave ethyl 3-polyfluoroalkyl-2-ethoxymethylidene-3-oxopropionates which reacted with primary aliphatic, aromatic, and heterocyclic amines to form ethyl 2-alkyl(aryl, hetaryl)aminomethylidene-3-polyfluoroalkyl-3-oxopropionates. According to the X-ray diffraction and IR data, the latter exist in the crystalline state as the corresponding E isomers, while in solution (NMR data), as mixtures of Z and E isomers. Condensation of ethyl 2-ethoxymethylidene-3-oxopropionates with secondary heterocyclic amines (morpholine and pyrrolidine) led to the formation of 2-morpholino(pyrrolidin-1-yl)methylidene-3-fluoroalkyl-3-oxopropionates which were shown to exist as Z isomers both in the crystalline state and in solution

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2007, 43 (7), 945-955.pdf
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22.

Инвентарный номер: нет.

   R 30


    Steric structure of alkyl 2-aryl(hetaryl)hydrazono-3-fluoroalkyl-3-oxopropionates [Electronic resource] / E. V. Shchegol'kov, Ya. V. Burgart, O. G. Khudina, V. I. Saloutin, O. N. Kazheva, A. N. Chekhlov // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2009. - Vol. 45, № 6. - P801-809

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Steric structure of fluorinated 2-arylhydrazono-3-oxo esters was studied by 1H, 19F, and 13C NMR spectroscopy and X-ray analysis. It was found that these compounds in the crystalline state and in solutions in acetone-d 6, DMSO-d 6, and CDCl3 exist as Z isomers with the ester fragment involved in intramolecular hydrogen bond with the hydrazone NH proton. Exceptions are alkyl 2-arylhydrazono-4,4-difluoro-3-oxobutanoates which exist in acetone-d 6 as mixtures of Z and E isomers, the former prevailing. Unlike fluorinated analogs, ethyl 2-(4-methylphenyl)hydrazono-3-oxobutanoate in crystal has the structure of E isomer in which intramolecular hydrogen bond is formed between the NH proton and acetyl carbonyl group. The same compound in acetone-d 6, DMSO-d 6, and CDCl3 gives rise to a mixture of Z and E isomers, the latter prevailing

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2009, 45 (6), 801.pdf
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23.

Инвентарный номер: нет.

   S 98


    Synthesis and structure of 4-hydroxy-4-fluoroalkyl-1,4-dihydroimidazo[5,1-c][1,2,4]triazines [Electronic resource] / E. V. Shchegol'kov, E. V. Sadchikova, Ya. V. Burgart, V. I. Saloutin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2009. - Vol. 45, № 4. - P572-580

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Azo coupling of fluorinated 1,3-diketones with 4-ethoxycarbonyl-1H-imidazole-5-diazonium chloride led to the formation of 4-hydroxy-4-polyfluoroalkyl-1,4-dihydroimidazo[5,1-c][1,2,4]triazines. According to the 1H and 19F NMR data, these compounds in solution give rise to ring-chain tautomerism via opening of the C4-N5 bond, which is especially characteristic of dihydroimidazotriazines with a polyfluoroalkyl substituent longer than trifluoromethyl group

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2009, 45 (4), 572.pdf
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24.

Инвентарный номер: нет.

   R 35


    Regioselective cyclocondensation of ethyl 2-ethoxymethylidene-3-oxo-3-polyfluoroalkylpropionates with thiazolylhydrazines [Electronic resource] / M. V. Pryadeina, A. V. Denisova, Ya. V. Burgart, V. I. Saloutin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2008. - Vol. 44, № 12. - P1811-1815

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Ethyl 2-ethoxymethylidene-3-oxo-3-polyfluoroalkylpropionates reacted in a regioselective fashion with thiazolylhydrazines to give the corresponding ethyl 1-thiazolyl-5-fluoroalkyl-1H-pyrazole-4-carboxylates. The product structure was determined on the basis of NMR and X-ray diffraction data

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2008, 44 (12), 1811.pdf
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25.

Инвентарный номер: нет.

   S 66

    Skryabina, Z. E.
    Cyclization of fluoroalkyl-containing 1,3-dicarbonyl compounds with ethylenediamine hydroperchlorate to 1,4-diazepines [Electronic resource] / Z. E. Skryabina, Ya. V. Burgart, V. I. Saloutin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1991. - Vol. 40, № 4. - P788-794

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: 2,3-Dihydro-1H-1,4-diazepines and 1,2,3,4-tetrahydro-1,4-diazepin-5-ones were obtained by direct condensation of fluorine-containing 1,3-diketones and 1,3-keto ethers, respectively, with ethylenediamine monohydroperchlorate. The structure of the compounds was confirmed by1H NMR, mass spectrometry and molecular weight determination

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1991, 40 (4), 788.pdf
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26.

Инвентарный номер: нет.

   S 17

    Saloutin, V. I.
    New fluorine-containing polyazaheterocycles [Electronic resource] / V. I. Saloutin, Z. E. Skryabina, Ya. V. Burgart // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1992. - Vol. 41, № 9. - P1700-1703

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Interaction of perfluoropentene-2 with ethylenediamine, diethylenetriamine, and triethylenetetramine forms previously unknown fluorine-containing azaheterocycles in yields of 25–74%. The structure of the compounds obtained has been confirmed by1H and19F NMR methods and mass spectrometry

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1992, 41 (9), 1700.pdf
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27.

Инвентарный номер: нет.

   N 52


    New hybrid chelating sorbents with grafted 3-aminopropionate groups based on mixed silicon, aluminum, titanium, or zirconium oxides [Electronic resource] / Yu. G. Yatluk, N. A. Zhuravlev, O. V. Koryakova, L. K. Neudachina, Yu. A. Skorik // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2005. - Vol. 54, № 8. - P1836-1841

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A series of new hybrid organo-inorganic sorbents with the 3-aminopropionate chelating group was synthesized. The synthesis includes the copolycondensation (sol—gel method) of tetraethoxysilane, 3-aminopropyltriethoxysilane, and several modifiers (MeSi(OEt)3, EtSi(OEt)3, Ti(OEt)4, AlONO3, ZrOCl2) followed by carboxyethylation with acrylic acid. The obtained chelating sorbents were characterized by elemental analysis, FT-IR and 1H NMR spectroscopy, and thermogravimetry. The N-carboxylated sorbents have a higher sorption capacity with respect to metal ions (0.5–0.9 mmol g?1, pH 6.3, NH4OAc, 20 °C) than the starting sorbents with the primary amino group (0.05–0.2 mmol g?1) and manifest high selectivity for copper(II) ion extraction

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2005, 54 (8), 1836.pdf
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28.

Инвентарный номер: нет.

   P 49

    Pestov, A. V.
    Synthesis in a gel as a new procedure for preparing carboxyethyl chitosan [Electronic resource] / A. V. Pestov, N. A. Zhuravlev, Yu. G. Yatluk // Russian Journal of Applied Chemistry. - 2007. - Vol. 80, № 7. - P1154-1159. - Bibliogr. : p. 1159 (14 ref.)

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A fundamentally new procedure of synthesis of carboxyethyl chitosan in a physical gel, ensuring higher degree of substitution at lower temperatures and lower consumption of time and chemicals, compared to the existing procedures, was developed. The structure of the resulting products was examined by diffuse reflection IR and 1H NMR spectroscopy in solutions and also 1H and 7Li broad line NMR

\\\\Expert2\\nbo\\Russian Journal of Applied Chemistry\\2007, v. 80, N. 7, p.1154.pdf
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29.

Инвентарный номер: нет.

   F 70


    Fluorine-containing Heterocycles. XI. 5(6)-Fluoro-6(5)-X-benzofuroxans: Synthesis, Tautomerism, and Transformations [Electronic resource] / O. N. Chupakhin, S. K. Kotovskaya, S. A. Romanova, V. N. Charushin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2004. - Vol. 40, № 8. - P1167-1174

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Features of 5(6)-fluoro-6(5)-X-benzofuroxans tautomerism were investigated. By 1H, 13C, and 19F NMR spectroscopy the direction of Boulton-Katritzky rearrangement in nitration, nitrosation, and azo coupling of fluorine-containing furoxanes was determined

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2004, 40 (8), 1167.pdf
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30.

Инвентарный номер: нет.

   F 70


    Fluorine-containing pyrido[1,2-a]quinazolin-6-ones [Electronic resource] / E. V. Nosova, G. N. Lipunova, M. I. Kodess, E. B. Vasil'eva, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2004. - Vol. 53, № 10. - P2314-2318

ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Reactions of 2-aminopyridine and 2-amino-5-methylpyridine with 2,3,4,5-tetrafluorobenzoyl chloride afforded N,N’-diaroylpyridinium salts, which were converted into 6H-pyrido[1,2-a]quinazolin-6-ones by refluxing in toluene in the presence of triethylamine. The angular structure of the tricyclic derivatives obtained was confirmed by 19F and 13C NMR spectroscopy and 2D heteronuclear HetCOR and HMBC experiments

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\2004, 53 (10), 2314.pdf
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