Zobrazeno 1 - 10
of 23
pro vyhledávání: '"E. F. Shibanova"'
Autor:
V. N. Kurochkin, I. A. Titova, E. F. Shibanova, M. L. Suslina, L. A. Ovodenko, V. A. Lopyrev, A. S. Zaks, G. V. Goldobina
Publikováno v:
ChemInform. 21
Autor:
Lyudmila I. Larina, M. G. Voronkov, E. E. Liepin'sh, I. A. Titova, Tamara I. Vakul'skaya, E. F. Shibanova, V. A. Lopyrev, M. F. Larin
Publikováno v:
Magnetic Resonance in Chemistry. 23:301-304
The influence of substituents on the 1H, 13C and 15N NMR chemical shifts of 2-substituted 5(6)-nitrobenzimidazoles and their analogues labelled with 15N in the nitro group was investigated. It was found that the substituent effects are transmitted to
Autor:
E. F. Shibanova, Lyudmila I. Larina, Tamara I. Vakul'skaya, R. A. Gavar, Ya. P. Stradyn, L. Kh. Baumane, S. M. Ponomareva, V. A. Lopyrev
Publikováno v:
Chemistry of Heterocyclic Compounds. 20:1021-1026
The electrochemical reduction of 2-substituted 5(6)-benzimidazoles has been studied with the aid of classical polarography and cyclic voltammetry in acetonitrile. The influence of the substituents in position 2 on the magnitudes of the half-wave pote
Autor:
Lyudmila I. Larina, V. A. Lopyrev, M. F. Larin, O. B. Nefedova, Tamara I. Vakul'skaya, M. G. Voronkov, E. F. Shibanova
Publikováno v:
Organic Magnetic Resonance. 15:219-224
The substituent influence on the 1H and 13C NMR chemical shifts in 2-substituted benzimidazoles and their anions and cations has been investigated. The transmission of the electronic effects of substituents from C-2 to C-5 (6) is approximately 20% le
Autor:
I. A. Titova, E. F. Shibanova, Lyudmila I. Larina, M. G. Voronkov, Tamara I. Vakul'skaya, V. A. Lopyrev, E. E. Liepin'sh
Publikováno v:
Organic Magnetic Resonance. 20:212-216
The influence of substituents on the 13C NMR chemical shifts of 2-substituted 1-methylbenzimidazoles has been investigated. The electronic effects of the substituents are transmitted to C-4 and C-7 mainly by the resonance mechanism, and to C-5, C-6 a
Autor:
Tamara I. Vakul'skaya, Lyudmila I. Larina, M. G. Voronkov, V. A. Lopyrev, I. A. Titova, E. F. Shibanova
Publikováno v:
Magnetic Resonance in Chemistry. 23:305-310
The substituent effects in dianion radicals of fourteen 2-substituted 5(6)-nitrobenzimidazoles, electrochemically generated in acetonitrile, were studied by ESR. It was found that the substituent influence on the nitro group is transmitted with appro
Autor:
E. F. Shibanova, T. N. Vereshchagina, V. V. Makarskii, O. A. Zasyadko, Yu. L. Frolov, M. G. Voronkov, L. V. Sherstyannikova, Nina N. Chipanina, V. A. Lopyrev
Publikováno v:
Chemistry of Heterocyclic Compounds. 13:569-572
3-Chloro- and 3-amino-1,2,4-triazole derivatives were subjected to a theoretical study by means of quantum-chemical calculation by the Pariser-Parr-Pople method. The experimentally observed electron transitions were assigned. The Cl atom and the NH2
Autor:
Lyudmila I. Larina, Tamara I. Vakul'skaya, B. I. Istomin, M. G. Voronkov, A. V. Filatov, E. F. Shibanova, V. A. Lopyrev
Publikováno v:
Organic Magnetic Resonance. 17:1-5
The influence of substituents on 1H and 13C NMR chemical shifts of 2-substituted 1,3-dimethylbenzimidazolium perchlorates in different solvents has been investigated. It has been shown that the transmission of the electronic effects of the substituen
Autor:
G. V. Goldobina, A. S. Zaks, E. F. Shibanova, V. N. Kurochkin, M. L. Suslina, I. A. Titova, L. A. Ovodenko, V. A. Lopyrev
Publikováno v:
Pharmaceutical Chemistry Journal. 23:717-720
Autor:
Nina N. Chipanina, M. G. Voronkov, P. V. Makerov, V. Yu. Vitkovskii, I. D. Kalikhman, V. A. Lopyrev, E. F. Shibanova, Lyudmila V. Klyba, G. I. Sarapulova, A. M. Shulunova, Zh. N. Fidler
Publikováno v:
Chemistry of Heterocyclic Compounds. 16:1079-1083
Only 3-acylamino-1,2,4-triazoles were isolated in the acylation of 3-amino-1,2,4-triazole with acid chlorides that contain strong electron acceptor substituents. Acylation takes place in the 2 position when aliphatic and aromatic acid chlorides are u