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1.
E. G. Ryabova 《Computational Mathematics and Modeling》1992,3(1):30-35
Translated from Vychislitel'nye Kompleksy i Modelirovanie Slozhnykh Sistem, pp. 98–106, Moscow State University, 1989. 相似文献
2.
Balashov A. L. Danov S. M. Krasnov V. L. Chernov A. Yu. Ryabova T. A. 《Russian Journal of General Chemistry》2002,72(5):744-747
In the neutral systems formaldehyde-water-alcohol (methanol, ethanol, ethylene glycol) at 25°C, formaldehyde is preferentially present as hemiacetals. The mean equilibrium constants of step polycondensation of formaldehyde are calculated. 相似文献
3.
S. Yu. Ryabova E. Yu. Khmel’nitskaya N. A. Rastorgueva N. B. Grigor’ev V. G. Granik 《Russian Chemical Bulletin》2004,53(12):2830-2833
Electrochemical reduction of 1-aryl-2-oxo-1,2,3,6-tetrahydro[1,4]diazepino[6,5-b]indole 4-oxides, 2-oxo-1-phenyl-1,2,3,6-tetrahydro[1,4]diazepino[6,5-b]indole, and 2-oxo-1-phenyl-1,2,3,4,5,6-hexahydro[1,4]diazepino[6,5-b]indole was studied. The results obtained were compared with previous data for the reduction of 4-oxides with formamidinesulfinic acid.__________Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2715–2718, December, 2004. 相似文献
4.
N. S. Prostakov A. V. Varlamov A. Hussein A. A. Fomichev N. A. Ryabova E. E. Stashenko 《Chemistry of Heterocyclic Compounds》1990,26(4):424-430
Spiro[4-azafluorene-9,1 cyclopropanes] were obtained by the reaction of 9-diazo-4-azafluorene with various alkenes in the form of a mixture of geometrical isomers differentiated according to the position of the substituents in the cyclopropane ring and also also according to position relative to the pyridine ring. In the reaction of 9-diazo-4-azafluorene with cyclopentanone, di(4-azafluorene-9 nyl) oxide is formed, while from its reaction with cyclohexanone, 2-oxo-spiro[4-azafluorene-9,1-cycloheptane] is obtained.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 4, pp. 495–501, April, 1990. 相似文献
5.
O. B. Ryabova E. Yu. Khmel’nitskaya V. A. Makarov L. M. Alekseeva N. B. Grigor’ev V. G. Granik 《Russian Chemical Bulletin》2005,54(12):2873-2879
On heating at pH 6.86, 4-(N,N-dialkylthiocarbamoylthio)-5-nitropyrimidines are transformed into dithiolopyrimidines, which are either oxidized to bis(4-dialkylthiocarbamoylpyrimidin-5-yl)
disulfides or converted into 4,6-diamino-5-nitropyrimidine derivatives with carbon disulfide elimination. The direction of
the reaction is determined by the nature of a substituent in position 2 of pyrimidine and the bulk of the thiocarbamate substituent.
Mechanistic schemes for these processes were proposed.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2777–2783, December, 2005. 相似文献
6.
S. Yu. Ryabova Yu. I. Trofimkin L. M. Alekseeva L. S. Khabarova V. G. Granik 《Chemistry of Heterocyclic Compounds》1991,27(3):278-283
The reaction of 2-(N,N-dimethylaminomethylene)indolin-3-one and 2-methyl-3-ethoxycarbonyl-5-(N,N-dimethyl aminomethylene)-2-pyrrolin-4-one with acyl halides was used to synthesize immonium salts, the aqueous hydrolysis of which leads to 2-formyl-3-hydroxyindole and 4-hydroxy-5 formylpyrrole derivatives. -Cyano--(2-indolyl)- and -cyano--(5-pyrrolyl)acrylic acid derivatives were synthesized by reaction of immonium salts of the pyrrole series, 4 acyloxy-5-formylpyrrole and 2-formyl-3-acyloxyindole derivatives, with compounds that contain an active methylene group.See [1] for Communication 63.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 343–348, March, 1991. 相似文献
7.
M. K. Polievktov O. A. Petrishcheva S. Yu. Ryabova T. V. Golovko V. G. Granik 《Chemistry of Heterocyclic Compounds》1991,27(5):511-516
The polarographic behavior of derivatives of 2-aminomethyleneindoxyl and 3-aminomethyleneoxindole in anhydrous DMF has been studied and the results compared with data on the polarographic reduction of substituted aminomethyleneacetophenones and of related enaminoketones and eneaminoamides. It is established that the ease of reduction is determined by the nature of the substituent on the enamine and indole nitrogen atoms and also by the presence or absence of an -methyl group in the -position of the eneamines (for noncyclic enaminoketones).For Communication 66, see [1].Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 5, pp. 642–648, May, 1991. 相似文献
8.
Natalia Monakhova Svetlana Ryabova Vadim Makarov 《Journal of heterocyclic chemistry》2016,53(3):685-709
The procedures for the synthesis of substituted pyrrolo[1,2‐a]indoles and some of their biological properties are reviewed. 相似文献
9.
R.V. Ryabova Yu.A. Bykovsky V.A. Elkhov A.I. Larkin V.L. Potapov L.N. Gnatiuk M.L. Gurari S.N. Marchenko 《Optics Communications》1976,18(3):406-409
New photographic materials for recording the radiation of injection lasers (λ=840 nm) with a sensitivity of ?10-4 J/sm2 and a resolution of 4300 lines/mm, and photographic materials for recording the radiation in the region of 1060 nm with a sensitivity of ?10-4 J/sm2 and a resolution of 1000 lines/mm are described. 相似文献
10.
E. Yu. Khmel'nitskaya N. B. Grigor'ev S. Yu. Ryabova Yu. I. Trofimkin V. A. Azimov V. G. Granik 《Chemistry of Heterocyclic Compounds》2002,38(11):1357-1362
We have conducted an electrochemical study of the oxidation-reduction properties of synthesized dienediamines: derivatives of indole, pyrrole, and thiophene. We have established that reduction of the indicated compounds occurs with successive transfer of two electrons, the first transfer being reversible. We consider the effect of structural factors and the nature of the heterocycle on the ease of reduction of the given compounds. We present the results of an initial study of the NO-donor ability of the compounds upon oxidation. 相似文献