Zobrazeno 1 - 10 of 28 pro vyhledávání: '"L. Ya. Leitis"'
1
Reactivity of isomeric pyridinecarboxaldehydes in catalyic hydrogenation
Autor: V. V. Stonkus, M. Shimanska, L. Ya. Leitis, M. B. Fleisher, D. P. Yansone
Publikováno v: Chemistry of Heterocyclic Compounds. 30:934-937
It has been established by a quantum-chemical method (CNDO/2) that there are two possible mechanisms occurring in the vapor phase hydrogenation of 2-, 3-, and 4-pyridinecarboxaldehydes in the presence of a copper-chromium catalyst at 180-300°C. One
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1059ab662a121e0d65cf1995c7e61464
https://doi.org/10.1007/bf01165032
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2
Synthesis and transformations of 4-substituted 2-aminothiazoles
Autor: B. O. Logvin, L. Ya. Leitis, U. G. Ibatullin, T. F. Petrushina, I. Z. Minibaev
Publikováno v: Chemistry of Heterocyclic Compounds. 29:612-615
4-Substituted 2-aminothiazoles were synthesized and some of the transformations of these compounds at the amino group were studied. A number of new thiazole derivatives were obtained.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::fd0d7b61d30457e9a494b448eae3ebbe
https://doi.org/10.1007/bf00534480
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6
ChemInform Abstract: Synthesis and Transformations of 4-Substituted 2-Aminothiazoles
Autor: I. Z. Minibaev, B. O. Logvin, T. F. Petrushina, L. Ya. Leitis, U. G. Ibatullin
Publikováno v: ChemInform. 25
4-Substituted 2-aminothiazoles were synthesized and some of the transformations of these compounds at the amino group were studied. A number of new thiazole derivatives were obtained.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0df982447743ddf685441841beb597d8
https://doi.org/10.1002/chin.199408193
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7
Ring-chain tautomerism of thiosemicarbazones of salicylaldehyde and pyridinecarbaldehyde in acidic media
Autor: V. V. Alekseev, K. N. Zelenin, O. B. Kuznetsova, I. Ya. Kalvin'sh, L. Ya. Leitis
Publikováno v: Chemistry of Heterocyclic Compounds. 30:107-109
On the basis of NMR spectroscopic data, it has been found that 4-substituted thosemicarbazones of salicylaldehyde and α-, β-, and γ- pyridinecarbaldehydes in solutions of trifluoroacetic acid are tautomeric mixtures of protonated linear and cyclic
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6a1b6f1ce42008082aff7c2c7abe3351
https://doi.org/10.1007/bf01164745
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8
Some reactions of 2-(2-hydroxyhexafluoro)isopropyl-5-methylfuran
Autor: L. Ya. Leitis, L. A. Balovskaya, G. A. Aleksandrova, G. I. Lekontseva, R. M. Fatkullin, U. G. Ibatullin, S. P. Gavrilova, T. F. Petrushina, Ya. M. Vilenchik
Publikováno v: Chemistry of Heterocyclic Compounds. 28:1109-1111
The bromination of 2-(2-hydroxyhexafluoro)isopropyl-5-methylfuran at the methyl group and subsequent reaction with nitrogen nucleophiles gave some secondary amines and quaternary salts.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3378e2c85990413398cdb4b881fe9b85
https://doi.org/10.1007/bf00529569
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9
Reactivity of methyl derivatives of nitrogenous heterocycles in vapor-phase catalytic oxidation
Autor: D. P. Yansone, P. A. Meksh, L. Ya. Leitis, M. V. Shimanskaya, L. O. Golender, R. A. Skolmeistere
Publikováno v: Chemistry of Heterocyclic Compounds. 22:63-66
A study has been made of the reactivity of methylpyridines, methylpyrazines, and methylquinolines in oxidation in the vapor phase in the presence of β-VO (PO3)2. Relationships have been found between the overall reaction rates of heterocyclic compou
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7570daa0547dd15df8016bc44c735b55
https://doi.org/10.1007/bf00515425
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