Zobrazeno 1 - 10
of 42
pro vyhledávání: '"E. Sh. Kagan"'
Publikováno v:
Advanced Engineering Research, Vol 19, Iss 2, Pp 151-157 (2019)
Introduction. Polymeric materials (PM) are increasingly used in various industries and agriculture. Under the action of UV light, PM are destroyed. UV stabilizers are used to protect PM from photodegradation. Their action is based on the absorption o
Externí odkaz:
https://doaj.org/article/ab3febdcafe24a34a4f72c26b4a7cda4
Autor:
I. Yu. Zhukova, I. S. Kashparov, I. B. Il'chibaeva, E. Sh. Kagan, A. V. Astakhov, V. P. Kashparova
Publikováno v:
Russian Journal of General Chemistry. 86:2423-2426
Pyridine catalyzes oxidation of alcohols with 4-acetamido-2,2,6,6-tetramethylpiperidine-1-oxyl–iodine catalytic system at room temperature. Symmetric esters are formed in good yields.
Autor:
I. Yu. Zhukova, V. P. Kashparova, E. N. Papina, E. Sh. Kagan, I. I. Kashparov, I. B. Il'chibaeva
Publikováno v:
Russian Journal of General Chemistry. 87:2733-2735
One-pot indirect electrochemical oxidation of alcohols in the methylene chloride–aqueous solution of sodium hydrocarbonate two-phase system in the presence of potassium iodide, 4-acetylamino-2,2,6,6-tetramethylpiperidin-1-oxyl, and 2,6-lutidine res
Autor:
E. Sh. Kagan, V. V. Yanilkin, V. P. Kashparova, Natalya V. Nastapova, I. Yu. Zhukova, Vladimir I. Morozov, I. I. Kashparov
Publikováno v:
Russian Journal of Electrochemistry. 47:1199-1204
Electrooxidation of spatially hindered amines of the series of 2,2,6,6-tetramethylpiperidine in the medium of acetonitrile results in formation of radical cations, aminyl radicals, nitroxyl radicals, and oxoammonium salts identified using the methods
Publikováno v:
Russian Journal of Organic Chemistry. 37:1592-1595
Electrochemical methoxylation of cinnamic acid is accompanied by decarboxylation and yields 1,1,2-trimethoxy-2-phenylethane through formation of γ-truxillic acid in the initial stage. Under the same conditions methyl cinnamate and cinnamamide give r
Publikováno v:
Russian Journal of Applied Chemistry. 83:745-747
Oxidation of primary and secondary alcohols in the two-phase system of methylene chloride-aqueous solution of sodium hydrocarbonate in the presence of the mediator system of potassium iodide-nitroxyl radical was studied. It is supposed that under the
Autor:
E. Sh. Kagan, I. Yu. Zhukova
Publikováno v:
Russian Journal of Electrochemistry. 36:203-210
The studies of electrosyntheses of 2,2,6,6-tetramethylpiperidine derivatives, including nitroxyl radicals, are generalized. The reactions of reduction, reductive amination, and halogenation are discussed. Special attention is paid to electrosyntheses
Publikováno v:
Russian Journal of Electrochemistry. 43:1249-1251
Electrolysis of 1-Chloro- and 1-Bromo-2,2,6,6-tetramethylpiperidines yields free nitroxyl radical 2,2,6,6-tetramethylpiperidine-1-oxyl. The reaction mechanism is suggested, which is based on the intermediate formation of aminyl radical. Concurrently
Publikováno v:
Russian Journal of Applied Chemistry. 77:1790-1792
Publikováno v:
Russian Journal of Applied Chemistry. 74:1318-1320
Anodic oxidation of styrene in methanol was performed in an electrolyzer with gas-lift. The possibility of carrying this process out in continuous mode with the use of technical-grade methanol was studied.