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 Найдено в других БД:Публикации Чарушина В.Н. (29)
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Общее количество найденных документов : 41
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 1-10    11-20   21-30   31-41   41-41 
1.
Инвентарный номер: нет.
   
   C 52


    Chizhov, D. L.
    Reactions of fluoroalkyl-containing bis-beta-diketones with hydrazine and hydroxylamine [Electronic resource] / D. L. Chizhov, V. G. Ratner, K. I. Pashkevich // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1999. - Vol. 48, N 4. - P758-760
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Polyfluoroalkyl-containing bis(5-hydroxy-Delta(2)-isoxazolines), and bisisoxazoles were synthezed for the first time by reactions of polyfluoroalkyl-containing bis-beta-diketones with hydrazine, phenylhydrazine, and hydroxylamine, respectively

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1999, 48 (4), 758-760.pdf
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2.
Инвентарный номер: нет.
   
   R 25


    Ratner, V. G.
    Synthesis of fluoroalkyl-containing bis-beta-diketones of aromatic and heterocyclic series [Electronic resource] / V. G. Ratner, D. L. Chizhov, K. I. Pashkevich // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 1995. - Vol. 44, N 11. - P2196-2197
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

\\\\Expert2\\nbo\\Russian Chemical Bulletin\\1995, 44 (11), 2196-2197.pdf
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3.
Инвентарный номер: нет.
   
   A 77


   
    Aromatization via a dibromination-double dehydrobromination sequence: a facile and convenient synthetic route to 2,6-bis(trifluoroacetyl)phenols [Text] / D. V. Sevenard, O. Kazakova, R. -M. Schoth, E. Lork, D. L. Chizhov, J. Poveleit, G. -V. Roeschenthaler // Synthesis. - 2008. - № 12. - P1867-1878
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

\\\\expert2\\nbo\\Synthesis\\2008, № 12. р.1867.pdf
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4.
Инвентарный номер: нет.
   
   T 44


   
    The first synthesis of 4-unsubstituted 3-(trifluoroacetyl)coumarins by the Knoevenagel condensation of salicylaldehydes with ethyl trifluoroacetoacetate followed by chromene-coumarin recyclization [Text] / D. L. Chizhov, V. Ya. Sosnovskikh, M. V. Pryadeina, Ya. V. Burgart, V. I. Saloutin, V. N. Charushin // Synlett. - 2008. - № 2. - P281-285
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ

\\\\expert2\\nbo\\Synlett\\2008. N 2. P. 281-285.pdf
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5.
Инвентарный номер: нет.
   
   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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6.
Инвентарный номер: нет.
   
   H 19


   
    Halogenation of fluorinated 1,3,5-triketones [Text] / D. V. Sevenard, O. Kazakova, D. L. Chizhov, D. S. Yachevskii, E. Lork, J. Poveleit, V. N. Charushin, G. -V. Roeschenthaler // Helvetica Chimica Acta. - 2007. - Vol. 90, № 2. - P369-384. - Библиогр. : с. 384 (17 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The behavior of linear and cyclic fluorinated 1,3,5-triketones and their metal derivatives towards common halogenating agents was examined, and optimal reaction conditions for the straightforward synthesis of mono-, di-, and tetrahalogenated products were found (Schemes 1-3). An aromatization through a double HBr elimination from an ,-dibrominated cyclohexanone was shown to be a promising synthetic route to 1,1-(2-hydroxy-1,3-phenylene)bis[2,2,2-trifluoroethanones] (= 2,6-bis(trifluoroacetyl)phenols; Scheme 4). Additionally, the 1,3,5-triketones prepared add readily H2O or alcohols to produce novel bridged 2,6-dihydroxypyran-4-ones (Scheme 2). The structure of the obtained compounds 6a and 7a was confirmed by X-ray structure analysis.

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7.
Инвентарный номер: нет.
   
   R 30


   
    Reaction of Polyhaloalkyl-Substituted Chromones, Pyrones, and Furanones with Salicylaldehydes as a Direct Route to Fused 2H-Chromenes [Electronic resource] / V. Ya. Sosnovskikh, V. Yu. Korotaev, D. L. Chizhov, I. B. Kutyashev, D. S. Yachevskii, O. N. Kazheva, O. A. Dyachenko, V. N. Charushin // Journal of Organic Chemistry. - 2006. - Vol. 71, № 12. - P4538-4543
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: Polyhaloalkyl-substituted chromones, Y-pyrones, and B-furanones react with salicylaldehydes in the presence of piperidine to give a wide variety of fused 2H-chromenes in good yields. This novel annulation reaction presumably proceeds by a tandem intermolecular oxa-Michael addition and subsequent intramolecular Mannich condensation. ??

\\\\Expert2\\nbo\\Journal of Organic Chemistry\\2006, v.71, N 12, p.4538.pdf
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8.
Инвентарный номер: нет.
   
   Y 12


    Yachevskii, D. S.
    Synthesis of regioisomeric polyfluoroalkylpyrazolo[1,5-a]pyrimidines [Electronic resource] / D. S. Yachevskii, D. L. Chizhov, V. N. Charushin // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2006. - Vol. 42, № 1. - P142-144. - Библиогр. : с. 144 (3 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: The article discusses a study that illustrates the synthesis of regioisometric polyfluoroalkylpyrazolo[1,5-a]pyramidines in 2 schemes. Polyfluoroalkyl-containing 1,3,5-triketones are convenient and promising reagents for building up various heterocyclic systems. Reactions of triketones as well as their dehydration products are examined.

\\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2006, 42 (1), 142.pdf
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9.
Инвентарный номер: нет.
   
   S 98


   
    Synthesis of 2,6-bis-polyfluoroalkyl-4H-pyran-4-ones [Text] / D. S. Yachevskii, D. L. Chizhov, K. I. Pashkevich, V. N. Charushin // ARKIVOC. - 2004. - № 11. - P71-76. - Библиогр. : с. 75 (9 назв.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Аннотация: A convenient synthesis is described of 2,6-bis-polyfluoroalkyl-4H-pyran-4-ones having ??symmetrical and asymmetrical structures, by dehydration of bis-polyfluoroalkyl- containing ??1,3,5-triketones.

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10.
Инвентарный номер: нет.
   
   F 70


   
    Fluorinated Pd(II)-1,3,5-triketonates: synthesis and molecular structure [Text] / D. L. Chizhov, D. V. Sevenard, E. Lork, K. I. Pashkevich, G. -V. Roeschenthaler // Journal of Fluorine Chemistry. - 2004. - Vol. 125, № 7. - P1137-1141 : ил. - Библиогр.: с. 1141 (20 ref.)
ББК 54
Рубрики: ХИМИЧЕСКИЕ НАУКИ
Кл.слова (ненормированные):
POLYFLUOROALKYLATED 1,3,5-TRIKETONES -- 2-PERFLUOROHEPTANOYL CYCLOHEXANONE -- MONONUCLEAR PD(II) TRIKETONATES -- ENOLIZATION -- MOLECULAR STRUCTURE -- X-RAY ANALYSIS
Аннотация: Several new mononuclear complexes of Pd(II) have been prepared from perfluorobutyl substituted 1,3,5-triketones (containing linear and carbocycle backbones) and perfluoroheptanoyl cyclohexanone. 1,3-Diketones formed a mixture of trans- and cis-forms, whereas 1,3,5-triketones gave trans-complexes exclusively. The enolization of the non-bonded carbonyls in this case depends on the nature of substituents at positions 2 and 4 of the 1,3,5-triketone moiety. The molecular structure of one triketonate complex was confirmed by X-ray single crystal investigation.????

\\\\Expert2\\nbo\\Journal of Fluorine Chemistry\\2004, v.125, p.1137.pdf
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