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  1. No Access

    Article

    Generation of Perfluoro- and 1-Chloroperfluoro-Indanyl and -Benzocyclobutenyl Cations with Perfluoroalkyl Groups in the Aliphatic Ring

    Perfluoro(alkylbenzocycloalken-1-yl) cations were generated in a SbF5−SO2ClF medium from perfluorinated indane and benzocyclobutene derivatives containing perfluoroalkyl groups in the alicyclic fragment. The cati...

    T. V. Mezhenkova, V. M. Karpov, Ya. V. Zonov… in Russian Journal of Organic Chemistry (2019)

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    Article

    Synthesis and E-Z isomerism of 4-(4-dimethylaminophenylimine) derivatives of 3-dialkylamino-2,5,6,7,8-pentafluoro-1,4-naphthoquinones

    Amination of 2,3,5,6,7,8-hexafluoro-1,4-naphthoquinone 4-(4-dimethylaminophenylimine) with secondary amines gives the corresponding 3-amino derivatives existing in solutions as a mixture of E and Z isomers about ...

    L. V. Ektova, I. P. Chuikov, A. D. Bukhtoyarova… in Russian Chemical Bulletin (2014)

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    Article

    Detection of anilines by luminescence spectroscopy using dissolved and adsorbed pyrylocyanine dyes

    Reactions of three pyrylocyanine dyes (derived from 2,4,6-trimethylpyrylium perchlorate) with p-toluidine and 2,4-diaminotoluene were studied to develop methods for detection of aromatic amines. The emission spec...

    V. V. Shelkovnikov, I. Yu. Kargapolova, S. V. Korotaev… in Russian Chemical Bulletin (2014)

  4. No Access

    Article

    Reaction of hexafluoro-N-(4-N,N-dialkylaminophenyl)-1,4-naphthoquinon-4-imines with primary amines

    Amination of 2,3,5,6,7,8-hexafluoro-N-(4-N,N-dialkylaminophenyl)-1,4-naphthoquinon-4-imines with primary amines led to the formation of 3-amino derivatives, which further underwent cyclization into 7-alkyl(aryl)-...

    L. V. Ektova, A. D. Bukhtoyarova, I. P. Chuikov… in Russian Journal of Organic Chemistry (2013)

  5. No Access

    Article

    Non-empirical and DFT calculations of 19F and 13C chemical shifts in the NMR spectra of substituted pentafluorobenzenes

    Chemical shifts in 19F and 13C NMR spectra of substituted pentafluorobenzenes are calculated by Hartree-Fock and density functional theory methods. The calculated values are compared with the experimental data kn...

    D. S. Fadeev, I. P. Chuikov, V. I. Mamatyuk in Journal of Structural Chemistry (2013)

  6. No Access

    Article

    Synthesis and structure of N-(4-dialkylaminophenyl)hexafluoro-1,4-naphthoquinone 4-imines

    The reaction of heptafluoro-1-naphthol with N,N-dialkyl-p-nitrosoanilines or N,N-dialkyl-p-phenylenediamines in the presence of HIO3 gave the corresponding polyfluorinated N-aryl-1,4-naphthoquinone 4-imine deriva...

    L. V. Ektova, A. D. Bukhtoyarova… in Russian Journal of Organic Chemistry (2013)

  7. No Access

    Article

    Generation of perfluoro- and 1-chloropolyfluorobenzocycloalken-1-yl cations and their relative stability

    Treatment of perfluorinated benzocyclobutene, indan, and tetralin with SbF5-SO2Cl2, as well as of their 1,1-dichloro analogs with SbF5, gave 1-chloropolyfluorobenzocycloalken-1-yl cations whose structure was stud...

    I. V. Beregovaya, V. M. Karpov, T. V. Mezhenkova… in Russian Journal of Organic Chemistry (2012)

  8. No Access

    Article

    Role of the alkyl fragment of initiating alkoxyamine in nitroxide mediated polymerization of styrene

    The role of the alkyl fragment of alkoxyamine initiating the homopolymerization of styrene is experimentally and theoretically studied in the case of 2,2,6,6-tetramethylpiperidine-1-oxyl derivatives. The rate ...

    D. P. Zubenko, I. A. Kirilyuk, S. Marque, I. P. Chuikov… in Polymer Science Series B (2010)

  9. No Access

    Article

    Synthesis and Molecular and Crystalline Structure of Polyfluoro-1,3-Diazafluorenes

    Reactions of 2-amino-3-(1-imino-2,2,2-trifluoroethyl)hexafluoro-1H-indene with carboxylic acid anhydrides and chlorides afforded 2-alkyl(aryl)-4-trifluoromethyl-5,6,7,8,9,9-hexafluoro-1,3-diazafluorenes. The mole...

    V. M. Karpov, V. E. Platonov, I. P. Chuikov… in Russian Journal of Organic Chemistry (2004)

  10. No Access

    Article

    Formation of Fluoroderivatives of 1,2,3,4-Tetrahydro-1,3-diazafluorene from 2-Dialkylamino- 3-(1-imino-2,2,2-trifluoroethyl)hexafluoroindenes

    2-Dimethylamino-3-(1-imino-2,2,2-trifluoroethyl)hexafluoroindene in the presence of DMSO or NEt3 undergoes isomerization into 1-methyl-4-trifluoromethyl-5,6,7,8,9,9-hexafluoro-1,2,3,4-tetrahydro-1,3-diazafluorene...

    V. M. Karpov, V. E. Platonov, I. P. Chuikov in Russian Journal of Organic Chemistry (2003)

  11. No Access

    Article

    Fluoroindenes. 13. Transformations of polyfluorinated indenes and 1-alkylideneindans in the H2O2-HF-SbF5 system

    The reaction of perfluorinated indene, 3-methylindene, and 1-methylene- and 1-ethylideneindans with hydrogen peroxide in the hydrogen fluoride—antimony pentafluoride medium takes place at the multiple bond of ...

    I. P. Chuikov, V. M. Karpov, V. E. Platonov in Bulletin of the Russian Academy of Science… (1992)

  12. No Access

    Article

    Conversion of perfluoro-1-indanone to perfluorochroman in the H2O2-HF-SbF5 system

    I. P. Chuikov, V. M. Karpov, V. E. Platonov in Bulletin of the Academy of Sciences of the… (1990)

  13. No Access

    Article

    Fluoroindenes. 12. Interaction of perfluorinated 3-methyl- and 3-ethylindenes, 1-methylene-, 1-ethylidene-, and 1-vinylindans with ammonia and aliphatic amines

    In the reactions with ammonia and alkylamines, perfluoro-3-ethylindene is more reactive than perfluoro-1-ethylideneindan, whereby the last two compounds undergo mutual conversion in the presence of F−. In the int...

    I. P. Chuikov, V. M. Karpov, V. E. Platonov in Bulletin of the Academy of Sciences of the… (1990)

  14. No Access

    Article

    Fluoroindenes

    The reaction of N2O4, and also HNO3 purified from oxides of nitrogen, with perfluoro-3-methylindene and perfluoro-1-methyleneindane takes place at the multiple bond of these compounds and results, after hydrolysi...

    I. P. Chuikov, V. M. Karpov, V. E. Platonov in Bulletin of the Academy of Sciences of the… (1990)

  15. No Access

    Article

    Fluoroindenes. 10. Cyclization of difluorocarbene to perfluoro-3-methylindene and perfluoro-1-methyleneindane. Thermolysis and bromination of the resultant cyclopropane derivatives

    Upon reaction of perfluoro-3-methylindene and perfluoro-1-methyleneindane with hexafluoropropylene oxide at 225°C the corresponding cyclopropane derivatives are formed: perfluoro-la-methyl-1,1a,6,6a-tetrahydro...

    I. P. Chuikov, V. M. Karpov, V. E. Platonov… in Bulletin of the Academy of Sciences of the… (1988)

  16. No Access

    Article

    Isomeric transformations of perfluoro-1-vinyl- and perfluoro-1,3-divinylindanes by the action of SbF5 and CsF

    1. Perfluoro-1-vinylindane converts by the action of SbF5 or CsF into perfluorinated 1-ethylideneindane, 3-ethyl...

    I. P. Chuikov, V. M. Karpov, V. E. Platonov… in Bulletin of the Academy of Sciences of the… (1988)