Search results for: Vyacheslav E. Platonov

Items from 1 to 20 out of 31 results

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Dendro-shaped blocks with arylsulfanyl fragments based on p-toluic acid

Victoria N. Berezhnaya, Alexander M. Maksimov, Vyacheslav E. Platonov, Vladimir V. Shelkovnikov

Mendeleev Communications > 2018 > 28 > 4 > 442-443

Chloromethylation of p-toluic acid affords 3,5-bis(chloro- methyl)-4-methylbenzoic acid whose subsequent treatment with arenethiols brings about spacer dendrimeric blocks containing polyfluoroarylsulfanyl fragments in a total yield of 60-75%.

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Generation of perfluorinated 1-alkylbenzocyclobuten-1-yl and 1-alkylindan-1-yl cations. On paradoxical stabilizing influence of an electron-withdrawing perfluoroisopropyl group on the relative stabilities of the cations

Tatyana V. Mezhenkova, Victor M. Karpov, Irina V. Beregovaya, Yaroslav V. Zonov, more

Journal of Fluorine Chemistry > 2016 > 192 > PA > 31-40

When perfluoro-1-alkylbenzocyclobutenes and -indanes were dissolved in an excess of SbF₅, perfluorinated alkylbenzocycloalken-1-yl cations containing a fluorine atom or a perfluoroalkyl group in the cationic centre were generated. Contrary to expectations, a number of stable long‐lived perfluoro-1-isopropylbenzocycloalken-1-yl cations containing an electron-withdrawing perfluoroisopropyl group in...

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Transformations of perfluorinated 1,2-dialkyl-, 1,1- and 1,2-alkylphenylbenzocyclobutenes to indan-2-one and isochromene derivatives under the action of CO/SbF5

Yaroslav V. Zonov, Victor M. Karpov, Tatyana V. Mezhenkova, Tatyana V. Rybalova, more

Journal of Fluorine Chemistry > 2016 > 188 > C > 117-125

Interaction of perfluorinated 1,2-dialkylbenzocyclobutenes with CO–SbF₅ at room temperature and perfluoro-1-methyl-2-phenylbenzocyclobutene at 50°C gives fluoroindan-2-one derivatives. When reaction temperature is raised to 70°C, polyfluorinated isochromene derivatives are formed in both cases. Interaction of perfluoro-1-ethyl-1-phenylbenzocyclobutene with CO–SbF₅ at 70°C gives, after treatment of...

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The first carbonylation of perfluoroorganic compounds: The reactions of perfluorobenzocyclobutene and its perfluoroalkyl and pentafluorophenyl derivatives with CO in SbF5 medium

Yaroslav V. Zonov, Victor M. Karpov, Vyacheslav E. Platonov

Journal of Fluorine Chemistry > 2014 > 162 > Complete > 71-77

Carbonylation of polyfluorinated benzocyclobutenes with CO in an SbF ₅ medium readily proceeds at room temperature and atmospheric pressure and it is followed by four-membered ring transformations. Perfluorinated benzocyclobutene, 3- and 4-methyl-benzocyclobutenes add two CO molecules to form, after ring opening and following heterocyclization, isochromene derivatives. Hydrolysis of the reaction...

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Transformations of perfluorinated 1-alkyl-, 1-phenyl- and 1,2-dialkylbenzocyclobutenes under the action of SiO2/SbF5

Yaroslav V. Zonov, Victor M. Karpov, Vyacheslav E. Platonov, Tatjana V. Rybalova

Journal of Fluorine Chemistry > 2013 > 145 > Complete > 41-50

Heating of perfluorinated 1-methyl-, 1-ethyl- and 1-isopropylbenzocyclobutenes with SiO ₂ in an SbF ₅ medium at 75°C results in perfluoro-2-alkylbenzocyclobutenones or perfluoro-3-alkylphthalides formation. Perfluorinated 1,2-diethyl- and 1-ethyl-2-methylbenzocyclobutenes react with SiO ₂ /SbF ₅ at 75°C to form, after treatment of the reaction mixture with water, perfluorinated...

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Fluorinated dihydroindeno[2,1-c][1,2,6]thiadiazines: The first synthesis, structural characterization and reactivity

Victor M. Karpov, Vyacheslav E. Platonov, Tatjana V. Rybalova, Yuri V. Gatilov, more

Journal of Fluorine Chemistry > 2012 > 135 > Complete > 254-260

3-(1-Amino-2,2,2-trifluoroethyliden)-1,1,4,5,6,7-hexafluoro-2-iminoindan (1) and 3-(1-amino-2,2,2-trifluoroethyliden)-1,1,4,5,6,7-hexafluoro-2-methyliminoindan (7) reacted with SOCl ₂ to give previously unknown 4a-chloro-5,6,7,8,9,9-hexafluoro-4-(trifluoromethyl)-4a,9-dihydroindeno[2,1-c][1,2,6]thiadiazine (2) and 5,6,7,8,9,9-hexafluoro-1-methyl-4-(trifluoromethyl)-1,9-dihydroindeno[2,1-c][1,2,6]thiadiazine...

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Synthesis and skeletal rearrangements of perfluorinated 4-alkyl- and 4-phenyl-tetralin-1-ones under the action of antimony pentafluoride

Yaroslav V. Zonov, Victor M. Karpov, Vyacheslav E. Platonov

Journal of Fluorine Chemistry > 2012 > 135 > Complete > 159-166

Heating of perfluorinated 1-methyl- and 1-ethyltetralins with SiO ₂ in an SbF ₅ medium at 100°C results in perfluoro-4-alkyltetralin-1-ones formation. Perfluoro-4-methyltetralin-1-one, under the action of SbF ₅ at 180°C with subsequent treatment of the reaction mixture with water, is converted to perfluoro-3,3-dimethylindan-1-one and perfluoro-3,4-dimethylisochromen-1-one....

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A novel and efficient method for the synthesis of polyfluoroarenesulfonyl bromides from polyfluoroarenethiols

Vyacheslav E. Platonov, Roman A. Bredikhin, Alexander M. Maksimov, Victor V. Kireenkov

Journal of Fluorine Chemistry > 2010 > 131 > 1 > 13-16

The first general methodology has been developed for the synthesis of polyfluoroarenesulfonyl bromides from polyfluoroarenethiols. At heating of polyfluoroarenethiols with a mixture of Br ₂ and fuming HNO ₃ or Br ₂ , HNO ₃ and H ₂ SO ₄ polyfluoroarenesulfonyl bromides were obtained in good yields.

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Skeletal transformations of perfluoro-1-ethyl-1-phenylbenzocyclobutene in the reaction with antimony pentafluoride

Tatyana V. Mezhenkova, Victor M. Karpov, Vyacheslav E. Platonov, Yuri V. Gatilov

Journal of Fluorine Chemistry > 2009 > 130 > 10 > 951-958

Interaction of perfluoro-1-ethyl-1-phenylbenzocyclobutene with SbF ₅ at room temperature gives, after treatment of the reaction mixture with H ₂ O, perfluoro-4-[1-(2-methylphenyl)propylidene]cyclohexa-2,5-dienone as a main product. The reaction at 90–95°C leads, after treatment with H ₂ O, to a mixture of perfluorinated 9-ethyl-9-methyl-1,2,3,4-tetrahydro-9H-fluorene, 9-ethyl-4a-methyl-4,4a-dihydrofluoren-1-one,...

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Skeletal transformations of perfluorinated 2,2-diethyl- and 2-ethyl-2-phenyl-benzocyclobutenones under the action of antimony pentafluoride

Yaroslav V. Zonov, Tatyana V. Mezhenkova, Victor M. Karpov, Vyacheslav E. Platonov

Journal of Fluorine Chemistry > 2008 > 129 > 12 > 1206-1208

Perfluoro-2-ethyl-2-phenylbenzocyclobutenone heated with SbF ₅ at 70°C and then treated with water, forms perfluoro-3-ethyl-3-phenylphthalide. In contrast to this, heating of perfluoro-2,2-diethylbenzo-cyclobutenone with SbF ₅ at 70°C gives, after treatment of the reaction mixture with water, perfluoro-2-(pent-2-en-3-yl)benzoic acid. When the reaction temperature is raised to 125°C,...

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Unusual interaction of perfluoroaromatic organozinc compounds with benzoyl chloride and DMF

Andrey S. Vinogradov, Vyacheslav I. Krasnov, Vyacheslav E. Platonov

Mendeleev Communications > 2008 > 18 > 4 > 227-228

The organozinc compounds obtained from chloropentafluorobenzene and octafluorotoluene in reactions with benzoyl chloride and DMF form N,N-dimethylbis(perfluoroaryl)methylamines; the addition of CuCl changes the direction of reaction towards the formation of corresponding polyfluoroaromatic ketones.

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Expansion of the pentafluorobenzene ring of perfluoro-1,2-diethyl-1-phenylbenzocyclobutene under the action of SbF5

Tatyana V. Mezhenkova, Vladimir R. Sinyakov, Victor M. Karpov, Vyacheslav E. Platonov, more

Journal of Fluorine Chemistry > 2008 > 129 > 1 > 64-67

Perfluoro-1,2-diethyl-1-phenylbenzocyclobutene under the action of SbF ₅ gives, after treatment of the reaction mixture with water, perfluoro-4-[1-(6-propyl-phenyl)-propylidene]cyclohexa-2,5-dienone along with the products of unusual pentafluorobenzene ring expansion – perfluorinated 4b,10-diethylbenzo[a]azulen-7(4bH)-one and 10-ethylbenzo[a]azulen-6(10H)-one.

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Reaction of perfluoro-1-ethylindan with SiO2/SbF5 and skeletal transformations of perfluoro-3-ethylindan-1-one under the action of SbF5 and SiO2/SbF5

Yaroslav V. Zonov, Victor M. Karpov, Vyacheslav E. Platonov

Journal of Fluorine Chemistry > 2007 > 128 > 9 > 1065-1073

Perfluoro-1-ethylindan heated with excess of SiO ₂ in an SbF ₅ medium at 75°C and then treated with water, gives 4-carboxy-perfluoro-3-methylisochromen-1-one. Perfluoro-3-ethylindan-1-one is converted, under the action of SbF ₅ at 70°C, to perfluoro-2-(but-2-en-2-yl)benzoic acid as a mixture of E- and Z-isomers. When the reaction temperature is raised to 125°C, a solution of...

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Transformation of perfluorinated benzocycloalkenes and alkylbenzenes to their carbonyl derivatives under the action of CF3COOH/SbF5

Yaroslav V. Zonov, Victor M. Karpov, Vyacheslav E. Platonov

Journal of Fluorine Chemistry > 2007 > 128 > 9 > 1058-1064

Perfluorinated benzocycloalkenes (benzocyclobutene, indan, tetralin), alkylbenzocycloalkenes and alkylbenzenes react with CF ₃ COOH/SbF ₅ at 20–50°C giving the corresponding carbonyl derivatives.

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The high-temperature alicyclic ring contraction of 1,1-dichloroperfluorotetralin and the alicyclic ring opening of 1,1-dichloroperfluorobenzocyclobutene

Victor M. Karpov, Tatyana V. Mezhenkova, Vyacheslav E. Platonov

Journal of Fluorine Chemistry > 2007 > 128 > 7 > 714-717

The pyrolysis of 1,1-dichloroperfluorotetralin (4) in a stream of argon gives a mixture contained perfluoro-1-methyleneindan (1), perfluoro-3-methylindene (6), 1,1-dichloroperfluoroindan (2) and perfluoroindene (7), while copyrolysis of tetralin 4 with CHClF ₂ gives a mixture of compounds 1, 6 in the absence of compounds 2 and 7. 1-Chloro-2-(1-chloro-2,2-difluorovinyl)-3,4,5,6-tetrafluorobenzene...

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Oxygen replacement by fluorine in carbonyl derivatives of perfluoroaromatic compounds and isomerization of perfluoroindan-1,3-dione to perfluoro-3-methylenephthalide under the action of HF/SbF5

Yaroslav V. Zonov, Victor M. Karpov, Vyacheslav E. Platonov, Tatjana V. Rybalova, more

Journal of Fluorine Chemistry > 2006 > 127 > 12 > 1574-1583

When acted upon by HF/SbF ₅ at 95°C, carbonyl groups of perfluorinated acetophenone (10), 3,4-dihydronaphthalen-1(2H)-one (8), 2,3-dihydronaphthalene-1,4-dione (9), benzocyclobutenone (6), benzocyclobutenedione (7) and indan-1-one (1) are converted into difluoromethylene groups to give the corresponding perfluoroaromatic products. Perfluoroindan-2-one (5), under the same conditions, is transformed...

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The first synthesis and X-ray structures of polyfluorinated 1,2-, 2,3- and 2,4a-dihydro-1,3-diazafluorenes

Victor M. Karpov, Vyacheslav E. Platonov, Tatjana V. Rybalova, Yuri V. Gatilov, more

Journal of Fluorine Chemistry > 2006 > 127 > 7 > 936-942

Acetic acid-catalyzed condensation of 2-amino-3-(1-imino-2,2,2-trifluoroethyl)-1,1,4,5,6,7-hexafluoroindene (1b) with acetone and cyclopentanone gives 5,6,7,8,9,9-hexafluoro-2,2-dimethyl-4-trifluoromethyl-2,3-dihydro-1,3-diazafluorene (2a) and 5,6,7,8,9,9-hexafluoro-4-trifluoromethyl-2,3-dihydro-1,3-diazafluorene-2-spiro-1′-cyclopentane (3a) together with small amounts of 5,6,7,8,9,9-hexafluoro-2,2-dimethyl-4-trifluoromethyl-1,2-dihydro-1,3-diazafluorene...

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Transformations of perfluoroindan-1-one and perfluoroindan-1,3-dione in the HF–SbF5 system

Yaroslav V. Zonov, Victor M. Karpov, Vyacheslav E. Platonov

Mendeleev Communications > 2006 > 16 > 3 > 167-168

When heated with HF–SbF ₅ , perfluoroindan-1-one is converted into perfluoroindan, whereas perfluoroindan-1,3-dione isomerises into perfluoro-3-methylenephthalide.

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Preparation of organozinc compounds from 3-chloroheptafluorotoluene and zinc: the participation of C–F bonds

Vyacheslav I. Krasnov, Andrey S. Vinogradov, Vyacheslav E. Platonov

Mendeleev Communications > 2006 > 16 > 3 > 168-170

Organozinc compounds were obtained from 3-chloroheptafluorotoluene and Zn in DMF; the C–Cl bond is mainly involved in this reaction; the addition of SnCl ₂ changes the main reaction course in the direction of the participation of the C–F bond (para to the CF ₃ group).

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Supramolecular synthons in crystals of partially fluorinated fused aromatics: 1,2,3,4-Tetrafluoronaphthalene and its aza-analogue 1,3,4-trifluoroisoquinoline

Irina Yu. Bagryanskaya, Yuri V. Gatilov, Alexander M. Maksimov, Vyacheslav E. Platonov, more

Journal of Fluorine Chemistry > 2005 > 126 > 9-10 > 1281-1287

From X-ray diffraction data, the crystal lattice of 1,2,3,4-tetrafluoronaphthalene 1 is composed of infinite π-stacks revealing π–π interactions of the arene-arene, arene-polyfluoroarene and polyfluoroarene-polyfluoroarene types. On replacement of the C2-F fragment of 1 by a N atom (i.e. in going from 1 to 1,3,4-trifluoroisoquinoline 2) the enlarged offset of neighboring molecules within the stacks...

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Search results for: Vyacheslav E. Platonov

Dendro-shaped blocks with arylsulfanyl fragments based on p-toluic acid

Generation of perfluorinated 1-alkylbenzocyclobuten-1-yl and 1-alkylindan-1-yl cations. On paradoxical stabilizing influence of an electron-withdrawing perfluoroisopropyl group on the relative stabilities of the cations

Transformations of perfluorinated 1,2-dialkyl-, 1,1- and 1,2-alkylphenylbenzocyclobutenes to indan-2-one and isochromene derivatives under the action of CO/SbF5

The first carbonylation of perfluoroorganic compounds: The reactions of perfluorobenzocyclobutene and its perfluoroalkyl and pentafluorophenyl derivatives with CO in SbF5 medium

Transformations of perfluorinated 1-alkyl-, 1-phenyl- and 1,2-dialkylbenzocyclobutenes under the action of SiO2/SbF5

Fluorinated dihydroindeno[2,1-c][1,2,6]thiadiazines: The first synthesis, structural characterization and reactivity

Synthesis and skeletal rearrangements of perfluorinated 4-alkyl- and 4-phenyl-tetralin-1-ones under the action of antimony pentafluoride

A novel and efficient method for the synthesis of polyfluoroarenesulfonyl bromides from polyfluoroarenethiols

Skeletal transformations of perfluoro-1-ethyl-1-phenylbenzocyclobutene in the reaction with antimony pentafluoride

Skeletal transformations of perfluorinated 2,2-diethyl- and 2-ethyl-2-phenyl-benzocyclobutenones under the action of antimony pentafluoride

Unusual interaction of perfluoroaromatic organozinc compounds with benzoyl chloride and DMF

Expansion of the pentafluorobenzene ring of perfluoro-1,2-diethyl-1-phenylbenzocyclobutene under the action of SbF5

Reaction of perfluoro-1-ethylindan with SiO2/SbF5 and skeletal transformations of perfluoro-3-ethylindan-1-one under the action of SbF5 and SiO2/SbF5

Transformation of perfluorinated benzocycloalkenes and alkylbenzenes to their carbonyl derivatives under the action of CF3COOH/SbF5

The high-temperature alicyclic ring contraction of 1,1-dichloroperfluorotetralin and the alicyclic ring opening of 1,1-dichloroperfluorobenzocyclobutene

Oxygen replacement by fluorine in carbonyl derivatives of perfluoroaromatic compounds and isomerization of perfluoroindan-1,3-dione to perfluoro-3-methylenephthalide under the action of HF/SbF5

The first synthesis and X-ray structures of polyfluorinated 1,2-, 2,3- and 2,4a-dihydro-1,3-diazafluorenes

Transformations of perfluoroindan-1-one and perfluoroindan-1,3-dione in the HF–SbF5 system

Preparation of organozinc compounds from 3-chloroheptafluorotoluene and zinc: the participation of C–F bonds

Supramolecular synthons in crystals of partially fluorinated fused aromatics: 1,2,3,4-Tetrafluoronaphthalene and its aza-analogue 1,3,4-trifluoroisoquinoline

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