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1.
S. V. Bulyarskii N. A. Butylkina N. S. Grushko A. E. Luk'yanov M. V. Nazarov I. O. Stepin 《Russian Physics Journal》1991,34(4):339-342
Latent macroscopic defects in silicon are detected by electrical and electron microscope measurements. They lead to anomalous temperature dependence of the Fermi level position and growth in the hole capture coefficient. A level with energy of 0.55 eV measured from the conduction zone controls the recombination process. It is proposed that macroscopic defects develop upon association of oxygen-silicon vacancy complexes. Action of an electron beam leads to reversible changes which increase upon multiple scanning, affecting the value of the diffusion length.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 4, pp. 71–75, April, 1991. 相似文献
2.
3.
N. V. Shibaeva S. V. Borodaev I. A. Yudilevich A. P. Knyazev A. D. Dubonosov A. I. Pyshchev S. M. Luk'yanov 《Chemistry of Heterocyclic Compounds》1991,27(2):219-223
4-Alkyl-3-azapyrylium salts undergo acylation at the alkyl group under acid-catalyzed conditions to give 4-acylmethyl-3-azapyrylium derivatives, which upon heating in proton-donating solvents recyclize to give 4-acylaminopyrylium salts.Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 2, pp. 265–269, February, 1991. 相似文献
4.
A regioselective method for the synthesis of [(-nitroalkyl)-ONN-azoxy]alkyl- and-arylsulfones by oxidative condensation of pseudonitroles with aliphatic and aromatic sulfamides under the action of dibromoisocyanurate (DBI) was proposed. The behavior of the azoxysulfones obtained toward acids and bases as well as futher transformations of the products of acid hydrolysis into salts and halo-derivatives of nitroalkylazoxysulfones were investigated.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1267–1270, July, 1994. 相似文献
5.
O. A. Luk'yanov I. A. Savost'yanova V. P. Gorelik N. I. Shlykova V. A. Tartakovskii 《Russian Chemical Bulletin》1992,41(8):1395-1399
Silver and mercury salts of nitro compounds react with bromo- or chloroadamantanes with the formation of products of C- and/or O-alkylation, the ratio of which depends on the structure of the initial reactants. The direct experimental evidence of nitronic esters to be isomerized into nitro derivatives and of their role as intermediates in the formation of the nitro derivatives in the alkylation of nitro compounds has been presented for the first time.N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, 117913 Moscow. Translated from Izvestiva Akademii Nauk, Seriya Khimicheskaya, No. 8, pp. 1798–1803, August, 1992. 相似文献
6.
β-Aminopropionohydroxamic acid reacts with aliphatic aldehydes or ketones to give 2-substituted 1-hydroxytetrahydropyrimidin-6-ones,
while its reaction with aromatic carbonyl compounds leads to either the same products or Schiff's bases, which can exist in
tautomeric equilibrium in solution.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 4, pp. 691–694, April, 1998. 相似文献
7.
A. V. Luk'yanov A. I. Lyutik V. I. Shvets N. A. Preobrazhenskii 《Chemistry of Natural Compounds》1966,1(4):185-187
Summary 1. The methyl ester of N-(N-carbobenzoyglycyl)-methoxyneuraminic acid has been synthesized by the carbodiimide method.2. Hydrogenation of the methyl ester of N-(N-carbobenzoxyglycyl)-methoxyneuraminic acid over Pb/BaSO4 has given the methyl ester of N-glycyl-methoxyneuraminic acid.Khimiya Prirodnykh Soedinenii, Vol. 1, No. 4, pp. 241–244, 1965 相似文献
8.
S. G. Zlotin O. V. Prokshits N. F. Karpenko Yu. A. Strelenko O. A. Luk'yanov 《Russian Chemical Bulletin》1992,41(8):1400-1413
We have worked out a method for the synthesis of 1,3,3-trisubstituted triazene 1-oxides based upon reaction of 1,1-disubstituted hydrazines with bromine in the presence of aryl- and heteroarylnitroso compounds in acid media. Obtained are a broad range of triazene 1-oxides, among which hitherto unknown compounds of the series of pyrazole and 3,3-dialkyltriazene 1-oxides that contain functional groups at the alkyl part of the molecule. We propose a reaction scheme which includes in situ formation of diazenium cations and reaction of them with nitroso compounds that are present in the system. By means of PMR,13C, and14N NMR spectroscopy, and mass spectroscopy, it has been shown that in all the prepared compounds the oxidated nitrogen atom is at the N1 position of the triazene N-oxide group.N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, 117913 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 8, pp. 1804–1820, August, 1992. 相似文献
9.
A one-step synthesis of alkylN-(-amidomethyl)glycinates from glycine esters or their salts, formaldehyde, and aroylamides was developed. The effect of the structure of the amide component and the reaction conditions on the yields of the products was investigated.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 6, pp. 1078–1080, June, 1994. 相似文献
10.
B. S. Luk'yanov L. I. Nivorozhkin V. I. Minkin A. V. Metelitsa 《Chemistry of Heterocyclic Compounds》1990,26(12):1416-1417
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 12, pp. 1700–1701, December, 1990. 相似文献