M 39 Matern, A. I. Progress in the studies of oxidation of dihydropyridines and their analogues [Electronic resource] / A. I. Matern, V. N. Charushin, O. N. Chupakhin // Russian Chemical Reviews. - 2007. - Vol. 76, № 1. - P23-40 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Published data on oxidation of dihydropyridines and on the mechanisms and the role of hydride shifts in bioorganic chemistry, enantioselective synthesis and supramolecular chemistry are generalised. \\\\Expert2\\nbo\\Russian Chemical Reviews\\2007, V.76, N1, p.23.pdf |
R 48 Reversible dimerization of 9-cyano-10-methylacridinyl radical [Electronic resource] / A. I. Matern, V. V. Yanilkin, V. N. Nastapova, V. I. Morosov, V. N. Charushin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2006. - Vol. 55, № 8. - P1498-1499. - Библиогр. : с. 1499 (10 назв.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 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. \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2006, 55 (8), 1498.pdf |
F 56 First example of direct introduction of nucleophiles bearing a stable radical moiety into azaaromatic substrates [Electronic resource] / E. V. Verbitskiy, G. L. Rusinov, P. A. Slepukhin, A. I. Matern, Yu. N. Shvachko, V. N. Charushin, O. N. Chupakhin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2006. - Vol. 55, № 11. - P2114-2116 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Addition products of 4-hydroximino-2,2,6,6-tetramethylpiperidine-1-oxyl with 5-aryl-2,3-dicyano-1-ethylpyrazinium salts were isolated for the first time. Crystallographic data on the three-dimensional structures of ?H-adducts bearing a stable radical moiety were obtaned \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2006, 55 (11), 2114.pdf |
5-Acylmethyl-3-(2-pyridyl)-1,2,4-triazines: Synthesis and Complexes with Cu(II) [Electronic resource] / A. M. Prokhorov, D. N. Kozhevnikov, V. L. Rusinov, A. I. Matern, M. M. Nikitin, O. N. Chupakhin, I. L. Eremenko, G. G. Aleksandrov // Russian Journal of Organic Chemistry (Translation of Zhurnal Organicheskoi Khimii). - 2005. - Vol. 41, № 11. - P1702-1705 Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: 5-Acylmethyl-3-(2-pyridyl)-1,2,4-triazines are easily prepared from accessible 3-(2-pyridyl)-1,2,4-triazine 4-oxides by reaction of the latter with acetophenone or trifluoroacetone in the presence of NaH. The compounds obtained behaved as efficient ligands in reaction with CuCl2 furnishing dimeric neutral complexes with Cu(II) whose structure was investigated by means of X-ray diffraction analysis \\\\Expert2\\nbo\\Russian Journal of Organic Chemistry\\2005, 41 (11), 1702-1705.pdf |
S 98 Synthesis, structures, and magnetic properties of crystals of dinuclear copper(II) and cobalt(II) complexes with 3-(3,5-dimethylpyrazol-1-yl)-6-R-1,2,4,5-tetrazines [Electronic resource] / E. V. Cherdantseva, D. V. Starichenko, P. A. Slepukhin, R. I. Ishmetova, Yu. N. Shvachko, A. V. Korolev, G. L. Rusinov, V. V. Ustinov, A. I. Matern, V. N. Charushin // Russian Chemical Bulletin (Translation of Izvestiya Akademii Nauk, Seriya Khimicheskaya). - 2010. - Vol. 59, № 4. - P717-723 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): DINUCLEAR COMPLEXES -- SPIN MAGNETISM -- TETRAZINES Аннотация: Dinuclear complexes of CuII with 3-(3,5-dimethylpyrazol-1-yl)-6-(2-hydroxyethylami-no)-1,2,4,5-tetrazine (1) and CoII with 3-(3,5-dimethylpyrazol-1-yl)-6-(piperidin-1-yl)-1,2,4,5- tetrazine (2) were synthesized and structurally characterized, and the magnetic (SQUID) and resonance (EPR) properties of van der Waals crystals based on these complexes were studied. Unusual behavior of the effective magnetic moment ?eff(T) is observed at T < 60 K. A nonmonotonic increase in eff() for 1 (s~6 %) and a 20% reduction of eff for 2 have a common origin and are due to the influence of spin-orbital coupling on the character of the splitting between the t2g and eg levels of the central ion. Distortions of the coordination site “switch on” a positive (1) or negative (2) contribution of the orbital magnetic moment near 6 K. Irreversible temperature behavior of eff(T) in the heating and cooling regimes in the vicinity of 60 K suggests that the character of structural distortions and the magnetic properties are related to ligand geometry. This factor plays a significant role in crystal engineering of magnetoactive structures with polynitrogen ligands \\\\Expert2\\nbo\\Russian Chemical Bulletin\\2010, 59 (4), 717-723.pdf |
O-56 On the Composition of Copper(II), Cobalt(II), and Nickel(II) Complexes with Some 3,6-Disubstituted 1,2,4,5-Tetrazines [Electronic resource] / E. V. Cherdantseva, A. V. Nesterova, A. I. Matern, L. Yu. Buldakova, M. Yu. Yanchenko, R. I. Ishmetova, G. L. Rusinov // Russian Journal of General Chemistry. - 2010. - Vol. 80, № 9. - P1860-1863 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): COPPER -- COBALT -- NICKEL -- TETRAZINES Аннотация: Complex formation in the systems containing copper(II), cobalt(II) and nickel(II) ions (M) and 3(3,5-dimethylpyrazol-1-yl)-6-R-1,2,4,5-tetrazines (R = 2-hydroxyethylamino, piperidino) (L) was studied by voltammetry and spectrophotometry. Cu(II), Co(II) and Ni(II) were found to form complex compounds with derivatives of 1,2,4,5-tetrazine with the ratio of the components M:L = 1:1. The complex stability constants \\\\Expert2\\nbo\\Russian Journal of General Chemistry\\2010, V. 80, N 9, p.1860-1863.pdf |
R 31 Receptors for anions [Electronic resource] / N. A. Itsikson, Yu. Yu. Morzherin, A. I. Matern, O. N. Chupakhin // Russian Chemical Reviews. - 2008. - Vol. 77, № 9. - P751-764 : рис. Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: The published data on receptors for anions with different geometry are generalised. Special attention is given to the analysis of binding abilities of organic ligands. Structural features of complex-forming agents and their properties are considered |
H 62 Heteroditopic receptors [Electronic resource] / N. A. Itsikson, G. V. Zyryanov, O. N. Chupakhin, A. I. Matern // Russian Chemical Reviews. - 2005. - Vol. 74, № 8. - P747-755 : рис., табл. Рубрики: ХИМИЧЕСКИЕ НАУКИ Аннотация: Data on heteroditopic receptors, an important class of complexing agents, are surveyed. Attention is focused on the synthesis of the ligands and analysis of their binding properties. The influence of structural features on the properties of such systems is investigated |
A 53 An enzyme-free electrochemical method for the determination of E-coli using Fe3O4 nanocomposites with a SiO2 shell modified by ferrocene [Electronic resource] / A. Kozitsina, N. N. Malysheva, I. A. Utepova, Yu. A. Glazyrina, A. I. Matern, Kh. Brainina, O. N. Chupakhin // Journal of Analytical Chemistry. - 2015. - Vol. 70, № 5. - С. 540-545. - Bibliogr. : p. 545 (37 ref.) Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): CYCLIC VOLTAMMETRY -- ELECTROACTIVE NANOCOMPOSITE PARTICLES -- IMMUNOASSAY Аннотация: An electrochemical immunoassay method is developed for determining the strain of Escherichia coli ATCC 25922 with the use of electroactive nanocomposite particles based on magnetite Fe3O4 coated by SiO2 modified with ferrocene as a signal label. A sensitive, direct, and easily measured analytical response is obtained by cyclic voltammetry. The developed method enables the determination of bacterial cells at a minimum concentration of 2.3 x 10(3) CFU/mL. The analytical range is 2.3 x 10(3)-2.3 x 10(7) CFU/mL; the detection limit is 2.5 x 10(2) CFU/mL. The required sample volume is 0.5 mL, and the analysis time is 40 min. \\\\expert2\\nbo\\Journal of Analytical Chemistry\\2015, V. 70, N 5, p.540-545.pdf |
C 10 C-H functionalization of azines. Anodic dehydroaromatization of 9-(hetero)aryl-9,10-dihydroacridines [Electronic resource] / A. V. Shchepochkin, O. N. Chupakhin, V. N. Charushin, D. V. Steglenko, V. I. Minkin, G. L. Rusinov, A. I. Matern // RSC Advances. - 2016. - Vol. 6, № 81. - С. 77834-77840 Рубрики: ХИМИЧЕСКИЕ НАУКИ Кл.слова (ненормированные): HYDRIDE TRANSFER-REACTIONS -- AROMATIC-SUBSTITUTION -- NUCLEOPHILIC-SUBSTITUTION Аннотация: Data on anodic dehydroaromatization of 9,10-dihydroacridines, bearing aryl and heteroaryl fragments, are presented. Effects of both electron-donating and electron-withdrawing substituents on the current-voltage characteristics of these compounds have been established. The experimental data proved to be in a good agreement with quantum chemical calculations. A simple and convenient method for the electrochemical conversion of dihydroacridines into the corresponding 9-(hetero)aryl-N-methylacridinium salts has been advanced \\\\expert2\\NBO\\RSC Advances\\2016. Vol. 6, N 81. P. 77834.pdf |