Výsledky vyhledávání - "L. M. Sitkina"

Benzenoid-quinoid tautomerism of azomethines and their structural analogs. 41. Photo- and thermochromic transformations of acylated N-alkylimines of 3-hydroxybenzo[b]thiophene-2-carbaldehyde and 3-hydroxy-1-methylindole-2-carbaldehyde

Autor: L. M. Sitkina, Alexander D. Dubonosov, I. V. Grabchak, G. D. Palui, O. I. Lantsova, Vladimir I. Minkin, Vladimir A. Bren

Publikováno v: Chemistry of Heterocyclic Compounds. 24:381-386

O- and N-Acylated alkylimines of 3-hydroxybenzo[b]thiophene-2-carbaldehyde and 3-hydroxy-1-methylindole-2-carbaldehyde were synthesized. Their Z → E isomerizations and N→O-acyl photo- and thermotransformations were investigated by means of electr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dd1b75fe87a7ae169e4b09da60c3d85b
https://doi.org/10.1007/bf00478855

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Benzenoid-quinoid tautomerism of azomethines and their structrual analogues XXX. Molecular structure of gallium and boron organometalic compounds with tautomeric azomethines

Autor: L. M. Sitkina, A. E. Lyubarskaya, L. M. Golubinskaya, Zh. V. Bren, Vladimir I. Bregadze, O.Y. Kompan, Yury T. Struchkov, Vladimir I. Minkin, Vladimir A. Bren, N. G. Furmanova

Publikováno v: Journal of Organometallic Chemistry. 192:1-15

The electronic structure and conformations of a systematic series of dimethylgallium and diphenylboron derivatives of aromatic and heterocyclic hydroxy- and mercaptoazomethines have been studied using the methods of electron absorption and emission s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::99854cefde61e0441a2a0f92b74d0dda
https://doi.org/10.1016/s0022-328x(00)93325-4

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Phenylmercury derivatives of aminomethylene- and hydroxymethylene-substituted 1-methyloxindoles, 1-indanones, and 1,3-indanediones

Autor: Vladimir I. Minkin, Zh. V. Bren, L. M. Sitkina, Vladimir A. Bren

Publikováno v: Chemistry of Heterocyclic Compounds. 15:56-59

A number of phenylmercury derivatives of 3-hydroxymethylene- and 3-aminomethylene-substituted 1-methyloxindoles, 1-indanones, and 1,3-indanediones were synthesized. It is shown that the preferred tautomeric structures of the potentially metallotropic

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::80aaffbaafb301b0d8fcf5b7fde97cf0
https://doi.org/10.1007/bf00471199

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Ring-chain tautomerism of vinylogs of 2(3)-amino derivatives of heterocyclic o-hydroxy aldehydes

Autor: Alexander D. Dubonosov, Vladimir I. Minkin, A. Ya. Bushkov, Vladimir A. Bren, L. M. Sitkina

Publikováno v: Chemistry of Heterocyclic Compounds. 20:951-957

Previously unknown vinylogs of 2(3)-aminomethylene-substituted benzo[b]thiophene-3-one, 1-methyloxindole, 1-methylindoxyl, benzo[b]furan-3-one, and indan-1,3-dione have been synthesized. Their tautomeric transformations have been studied by methods o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::830fee84c9dc3b05572abca17bb17087
https://doi.org/10.1007/bf00506385

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Benzenoid-quinone tautomerism in azomethines and their structural analogs. 34. 3-hydroxy-1-methylindole-2-carbaldehyde imines

Autor: A. É. Lyubarska, Vladimir I. Minkin, Vladimir A. Bren, L. M. Sitkina, Alexander D. Dubonosov

Publikováno v: Chemistry of Heterocyclic Compounds. 21:763-766

N-aryl- and N-alkylimines of 3-hydroxy-1-methylindolecarbaldehyde have been synthesized, and have been assigned ketoenamino structures based on their UV, IR, and PMR spectra. The fluorescent properties of these materials have also been examined.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3d6744133d2c69914eb1a5a57c65f6e
https://doi.org/10.1007/bf00519142

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Benzenoid-quinoid tautomerism of azomethines and their structural analogs. 43. Phenylmercury derivatives of 3-hydroxy-2-acetyl(benzoyl)benzo[b]thiophene and 3-hydroxy-1-methylindole-2-carbaldehyde imines

Autor: Vladimir I. Minkin, Vladimir A. Bren, A. E. Lyubarskaya, Alexander D. Dubonosov, E. N. Shepelenko, L. M. Sitkina

Publikováno v: Chemistry of Heterocyclic Compounds. 25:494-497

Phenylmercury derivatives of 3-hydroxy-2-acetyl(benzoyl)benzo[b]thiophene and 3-hydroxy-1-methyl-2-carbaldehyde N-aryl- and N-alkylimines, to which a keto enamine structure with strong intramolecular coordination of the mercury atom and the carbonyl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bca4760d9e8d75a4193b60fdb022b66d
https://doi.org/10.1007/bf00482490

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Synthesis and structure of azomethines of 1-methyl-2-keto-3-formylindoline

Autor: Vladimir I. Minkin, Vladimir A. Bren, L. M. Sitkina

Publikováno v: Chemistry of Heterocyclic Compounds. 11:437-441

Azomethines of 1-methyl-2-keto-3-formylindoline, to which a ketoamine structure was assigned on the basis of their UV, IR, and PMR spectra, were synthesized. The stability of tautomers of this type is explained by means of quantum-chemical calculatio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::807feeb7a6e88e3d6a997c040cb8eeb3
https://doi.org/10.1007/bf00502430

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