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 |
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 |
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 |