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1.
Strunskaya E. I. Yanilkin V. V. Bredikhina Z. A. Nastapova N. V. Morozov V. I. Maksimyuk N. I. Sharafutdinova D. R. Bredikhin A. A. 《Russian Journal of General Chemistry》2003,73(5):806-815
The electron-acceptor nitrogen and sulfur atoms in 3,4-disubstituted 1,2,5-thiadiazoles are responsible for much decreased reduction potentials and much increased oxidation potentials of these compounds compared with the corresponding carbocyclic derivatives. The thiadiazole ring is resistant to oxidation, and the reversible electron transfer gives rise to fairly stable radical cations. Reductive stability of the heterocycle depends on the nature of its substituents and on the medium: When nucleofuge substituents are present, two-electron transfer in aprotic media results in heteroring opening with iminonitrile formation, whereas in the presence of two readily leaving groups, the electron transfer induces cleavage of the complete heteroring into inorganic anions. 相似文献
2.
V. V. Yanilkin V. P. Gubskaya N. V. Nastapova L. Sh. Berezhnaya I. E. Ismaev Yu. Ya. Efremov I. A. Nuretdinov 《Russian Chemical Bulletin》2004,53(12):2793-2797
The combined electrochemical reduction of fullerene C60 in the presence of p-bromo-benzoyldibromomethane or bis(diisopropoxyphosphoryl)dibromomethane at a brass electrode in a mixed solvent o-dichlorobenzene-MeCN (3:1 v/v)/0.05 M Bu4NBF4 at room temperature affords 61-(p-bromobenzoyl)methano[60]fullerene or 61,61-bis(diisopropoxyphosphoryl)methano[60]fullerene, respectively, in 50% yields.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2681–2685, December, 2004. 相似文献
3.
V. A. Mamedov A. A. Kalinin V. V. Yanilkin N. V. Nastapova V. I. Morozov A. A. Balandina A. T. Gubaidullin O. G. Isaikina A. V. Chernova Sh. K. Latypov I. A. Litvinov 《Russian Chemical Bulletin》2007,56(10):2060-2073
The oxidative dehydrocyclization of the 3-(indolizin-2′-yl)-2-oxoquinoxaline monopodand performed either electrochemically
or under the action of molecular iodine affords new redox-active heterocyclophane consisting of the redox-switchable biindolizine
fragment combined with the polyether-bridged π-deficient quinoxaline systems. The single-crystal X-ray diffraction study showed
that the trioxaundecane chain of heterocyclophane adopts an extended conformation, and one of the phenyl substituents of the
molecule closes the pseudocavity formed by the spacer from one of the sides. The cyclic voltammetric study of heterocyclophane
in MeCN and DMF showed the three-step oxidation of the indolizine fragments accompanied by the single-electron transfer in
each step. The first and third steps are reversible, and the second step is irreversible. The oxidation at potentials of the
first peak gives rise to stable radical cations detected by the ESR method (g = 2.0024, a
2N = 0.26 mT).
Dedicated to Professor E. A. Berdnikov on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 10, pp. 1991–2003, October, 2007. 相似文献
4.
V. V. Yanilkin A. R. Mustafina A. S. Stepanov N. V. Nastapova G. R. Nasybullina A. Yu. Ziganshina S. E. Solovieva A. I. Konovalov 《Russian Journal of Electrochemistry》2011,47(10):1082-1090
The results of authors on designing electroswitchable supramolecular systems based on calix[4]arenes, calix[4]resorcinols,
and transition metal ions and complexes are summarized. We consider systems in which the switching is performed owing to electrochemical
reactions both of groups grafted to the macrocycle and bound substrates. Examples of electrochemically switchable luminescence
are given. 相似文献
5.
E. S. Kagan V. V. Yanilkin N. V. Nastapova V. I. Morozov I. Yu. Zhukova I. I. Kashparov V. P. Kashparova 《Russian Journal of General Chemistry》2011,81(10):2151-2156
Electrochemical oxidation of 1-haloamines of the 2,2,6,6-tetramethylpiperidine series results in the formation of relatively
stable radical-cations, detected by the methods of cyclic voltammetry and ESR spectroscopy. The final products of electrochemical
oxidation of these haloamines are stable nitroxyl radicals. 相似文献
6.
V. V. Yanilkin A. S. Stepanov N. V. Nastapova A. R. Mustafina V. A. Burilov S. E. Solov’eva I. S. Antipin A. I. Konovalov 《Russian Journal of Electrochemistry》2010,46(11):1263-1279
The methods of cyclic voltammetry, electrolysis, and spectrophotometry were used to study electrochemical properties of (TCAS
+ Fe3+ + dipy), (CCAS + Fe3+ + dipy), and (CCAS + Fe3+ + [Co(dipy)3]3+) triple systems (where TCAS is n-sulfonatothiacalix[4]arene, CCAS is tetracarboxylate n-sulfonatocalix[4]arene, and dipy = α,α′-dipyridyl) in an aqueous solution. One-electron reduction of Fe(III) in the (TCAS
+ Fe3+ + dipy) system at pH 2.5 results in electroswitching of iron ions from the lower TCAS ring to the upper ([Fe(dipy)3]2+). Reverse electrochemical switching of the system is impossible due to mediator ([Fe(dipy)3]2+/3+) oxidation of TCAS. Reverse electroswitching of Fe(III) ions from unbound to bound state as ([Fe(dipy)3]2+) with CCAS has been revealed in the system (CCAS + Fe3+ + dipy) (pH 1.7) upon single-electron transfer, whereas reversible electroswitching by the upper rim of CCAS from one complex
ion ([Co(dipy)3]3+) to another ([Fe(dipy)3]2+) has been demonstrated in the system ([Co(dipy)3]3+ + CCAS + Fe3+ upon double-electron transfer. In all systems, electric switching was accompanied by synchronous color switching. 相似文献
7.
E. Sh. Kagan I. Yu. Zhukova V. V. Yanilkin V. I. Morozov N. V. Nastapova V. P. Kashparova I. I. Kashparov 《Russian Journal of Electrochemistry》2011,47(11):1199-1204
Electrooxidation of spatially hindered amines of the series of 2,2,6,6-tetramethylpiperidine in the medium of acetonitrile
results in formation of radical cations, aminyl radicals, nitroxyl radicals, and oxoammonium salts identified using the methods
of cyclic voltammetry and ESR spectroscopy. 相似文献
8.
V. A. Mamedov A. A. Kalinin V. V. Yanilkin A. T. Gubaidullin Sh. K. Latypov A. A. Balandina O. G. Isaikina A. V. Toropchina N. V. Nastapova N. A. Iglamova I. A. Litvinov 《Russian Chemical Bulletin》2005,54(11):2616-2625
The reactions of 3-acetylquinoxalin-2-one with methyl-and benzylpyridines in the presence of iodine produce the corresponding
3-(2-alkylpyridinioacetyl)quinoxalin-2(1H)-one iodides. Treatment of the latter with triethylamine affords the corresponding 3-indolizin-2-ylquinoxalin-2-ones. Due
to the presence of the endocyclic carbamoyl group, the reactions of these compounds with bisalkylating reagents give quinoxaline-containing
monopodands and monoalkylation products containing spacers with different lengths and of different nature.
Dedicated to Professor Ya. A. Levin on the occasion of his 70th birthday.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 11, pp. 2534–2542, November, 2005. 相似文献
9.
G. M. Fazleeva V. P. Gubskaya F. G. Sibgatullina V. V. Yanilkin N. V. Nastapova Sh. K. Latypov A. A. Balandina I. E. Ismaev V. V. Zverev Yu. Ya. Efremov I. A. Nuretdinov 《Russian Chemical Bulletin》2006,55(3):507-516
The reactions of fullerene C60 with thiophosphorylated mono-or dialdehydes and N-methylglycine in toluene afforded new thiophosphorylated fullerenopyrrolidines, including those containing the free aldehyde
group. The purity and compositions of the reaction products were confirmed by MALDI-TOF mass spectrometry and HPLC. The structures
of the reaction products were established by two-dimensional homo-and heterocorrelation NMR experi-ments. The properties of
the products were studied by cyclic voltammetry and quantum chemical methods. The Pishchimuka rearrangement in thiophosphorylated
derivatives of fullerenopyrrolidines was performed for the first time, and thiol esters of phosphonic acids of fullerenopyrrolidines
were prepared.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 489–497, March, 2006. 相似文献
10.
A. I. Matern V. V. Yanilkin V. N. Nastapova V. I. Morosov V. N. Charushin O. N. Chupakhin 《Russian Chemical Bulletin》2006,55(8):1498-1499
The electrochemical reduction of the 9-cyano-10-methylacridinium cation in acetonitrile yielded the corresponding radical,
which was rather stable at 20 °C and gave a resolved ESR spectrum. This radical reversibly dimerized in the temperature range
from 20 to −30 °C.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1444–1445, August, 2006. 相似文献