Výsledky vyhledávání - "E. R. Zhanchipova"

Mass spectra of new heterocycles: X. Fragmentation of the molecular ions of 1-alkyl(cycloalkyl, aryl)-3-alkoxy(aryl)-2-methylsulfanyl-1H-pyrroles

Autor: Ol'ga G. Volostnykh, Lyudmila V. Klyba, Nina A. Nedolya, E. R. Zhanchipova, Ol'ga A. Tarasova

Publikováno v: Russian Journal of Organic Chemistry. 46:1038-1048

The mass spectra of previously unknown 1-alkyl(cycloalkyl, aryl)-3-alkoxy(aryl)-2-methylsulfanyl-1H-pyrroles were studied. Fragmentation of all 3-alkoxy-substituted pyrroles under electron impact (70 eV) follow both ether and sulfide decomposition pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6da47290d81fc40746646ccce39eacf6
https://doi.org/10.1134/s1070428010070134

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Mass spectra of new heterocycles: IX. Main fragmentaion laws of 7-methyl-2-(methylsulfanyl)-3-(1-ethoxyethoxy)-4,5-dihydro-3H-azepine and its structural isomers (2,3-dihydropyridine, pyrrole, thiophene) under electron impact

Autor: Ol'ga G. Volostnykh, Ol'ga A. Tarasova, Lyudmila V. Klyba, Nina A. Nedolya, E. R. Zhanchipova

Publikováno v: Russian Journal of Organic Chemistry. 46:218-225

Mass spectra were investigated for the first time of four structural isomers of heterocycles, formerly inavailable 7-methyl-2-(methylsulfanyl)-3-(1-ethoxyethoxy)-4,5-dihydro-3H-azepine, 2,2-dimethyl-6-(methylsulfanyl)-5-(1-ethoxyethoxy)-2,3-dihydropy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5b867d1422e3f5173b616296d345a32c
https://doi.org/10.1134/s1070428010020132

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Reaction of 1,1-dichloroethane with tellurium in the system hydrazine hydrate-potassium hydroxide

Autor: V. A. Grabel’nykh, Ekaterina P. Levanova, E. R. Zhanchipova, Lyudmila V. Klyba, A. V. Kolesnikov, A. I. Albanov, N. V. Russavskaya, N. A. Korchevin

Publikováno v: Russian Journal of Organic Chemistry. 45:988-992

The reaction of 1,1-dichloroethane with tellurium in the system hydrazine hydrate-potassium hydroxide gave ethyltellanyl derivatives as a result of replacement of one chlorine atom in the substrate by tellurium, and of the other, by hydrogen. Probabl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::27884f7c250ddb735255d1de29b29d0c
https://doi.org/10.1134/s1070428009070021

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Reactions of 2,3-dichloro-1-propene with sulfur and tellurium in the system hydrazine hydrate-KOH

Autor: E. R. Zhanchipova, Ekaterina P. Levanova, N. V. Russavskaya, Ol'ga A. Tarasova, A. I. Albanov, Lyudmila V. Klyba, N. A. Korchevin, V. A. Grabel’nykh

Publikováno v: Russian Journal of General Chemistry. 79:1097-1101

2,3-Dichloro-1-propene reacts with sulfur dissolved in the system hydrazine hydrate-KOH (with formation of K2S2 or K2S) to afford bis(2-chloro-1-propene-3-yl)sulfide as the main product in both cases. Under similar conditions tellurium induces β-eli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6e6e30e08e0217a4f2a560471e4c7c40
https://doi.org/10.1134/s1070363209060103

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Mass spectra of new heterocycles: VIII. Fragmentation of 6-alkoxy- and 6-aryl(hetaryl)-3H-azepines under electron impact

Autor: Ol'ga A. Tarasova, Ol'ga G. Volostnykh, Nina A. Nedolya, Lyudmila V. Klyba, E. R. Zhanchipova

Publikováno v: Russian Journal of Organic Chemistry. 45:596-608

The electron impact mass spectra of previously unknown 2-alkyl-6-alkoxy-, 2,3-trimethylene-6-alkoxy- and 2-alkyl-6-aryl(hetaryl)-3H-azepines were studied. All compounds give rise to stable molecular ions (Irel = 44–100%) whose fragmentation pattern

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::296af000b35d8265f5e26934ab652994
https://doi.org/10.1134/s1070428009040216

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Selective synthesis of isomeric dithioglycerols

Autor: Ekaterina P. Levanova, N. A. Korchevin, Lyudmila V. Klyba, E. R. Zhanchipova, V. A. Grabel’nykh, N. V. Russavskaya, E. N. Sukhomazova, I. A. Zemirova, A. I. Albanov

Publikováno v: Russian Journal of Organic Chemistry. 44:1428-1433

Reactions of 2,3-dibromopropan-1-ol and 1,3-dichloropropan-2-ol with elemental sulfur activated in the system hydrazine hydrate-2-aminoethanol at 30–35°C gave oligomeric polysulfides which were subjected to reductive cleavage with formation of ind

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4cd2da71e44f9a82063f203a06e72320
https://doi.org/10.1134/s1070428008100059

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Reactions of dichloromethane with chalcogens and dimethyl chalcogenides in the hydrazine hydrate-alkali system

Autor: Lyudmila V. Klyba, V. A. Grabel’nykh, N. A. Korchevin, E. N. Sukhomazova, V. Yu. Vshivtsev, Ekaterina P. Levanova, E. R. Zhanchipova, A. I. Albanov, N. V. Russavskaya

Publikováno v: Russian Journal of General Chemistry. 78:1734-1741

Methods of synthesis of compounds MeY(CH2Y)nMe (Y=S, Se, Te; n = 1–3) containing several identical or different chalcogen atoms are suggested. The methods are based on the reactions of dichloromethane with elemental chalcogens (Y2−) and dimethyl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::71f771b7ca4e5c87af1f95e051824761
https://doi.org/10.1134/s1070363208090156

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1-Alkylpyrazoles and 1-alkyl-5-chloropyrazoles from halovinyl ketones and 1,1-dialkylhydrazines

Autor: Mirskova Anna N, Galina G. Levkovskaya, V. A. Savosik, Lyudmila V. Klyba, E. R. Zhanchipova, G. V. Bozhenkov

Publikováno v: Russian Journal of Organic Chemistry. 44:1194-1199

Regioselective heterocyclization of alkyl 2-chloro-and 2,2-dichlorovinyl ketones with 1,1-dialkyl-hydrazines to 1,3-dialkyl-1H-pyrazoles and 1,3-dialkyl-5-chloro-1H-pyrazoles involves intermediate formation of the corresponding dialkylhydrazones. Fra

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::374d24f1af30d431d21081e368bd5b6d
https://doi.org/10.1134/s1070428008080150

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Distinguishing Features of reactions of 2-chloro-and 2,2-dichloro(bromo)vinyl ketones with alkyl-and arylhydrazines

Autor: Lyudmila I. Larina, Mirskova Anna N, Lyudmila V. Klyba, Galina G. Levkovskaya, E. R. Zhanchipova, G. V. Bozhenkov, V. A. Savosik

Publikováno v: Russian Journal of Organic Chemistry. 44:1014-1023

2-Chlorovinyl alkyl ketones react with alkylhydrazines to give mixtures of 1-R-3-R′- and 1-R-5-R′-pyrazoles: The 1-R-3-R′-pyrazoles form through the heterocyclization of 2-chlorovinyl ketone alkylhydrazones whereas in the heterocyclization into

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::aa48aeaf6636d9a4a9a875cb8595748e
https://doi.org/10.1134/s1070428008070129

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Reactions of chloromethyloxirane and dihalopropanols with chalcogens in basic reducing systems

Autor: E. N. Sukhomazova, Ekaterina P. Levanova, E. R. Zhanchipova, L. V. Klyba, N. V. Russavskaya, V. A. Grabel’nykh, A. V. Elaev, N. A. Korchevin, A. I. Albanov

Publikováno v: Russian Journal of Organic Chemistry. 44:505-510

Chloromethyloxirane and 2,3-dibromopropan-1-ol reacted with a solution of selenium or tellurium in the system hydrazin hydrate-potassium hydroxide (K2Se2, K2Te2) to give allyl alcohol; the reaction was accompanied by regeneration of the initial free

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1f45aaa0cd5549403a8547026063db80
https://doi.org/10.1134/s1070428008040064

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