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http://elar.urfu.ru/handle/10995/27233
Название: | Microwave-assisted palladium-catalyzed C-C coupling versus nucleophilic aromatic substitution of hydrogen (SN H) in 5-bromopyrimidine by action of bithiophene and its analogues |
Авторы: | Verbitskiy, E. V. Cheprakova, E. M. Zhilina, E. F. Kodess, M. I. Ezhikova, M. A. Pervova, M. G. Slepukhin, P. A. Subbotina, J. O. Schepochkin, A. V. Rusinov, G. L. Chupakhin, O. N. Charushin, V. N. |
Дата публикации: | 2013 |
Библиографическое описание: | Microwave-assisted palladium-catalyzed C-C coupling versus nucleophilic aromatic substitution of hydrogen (SN H) in 5-bromopyrimidine by action of bithiophene and its analogues / E. V. Verbitskiy, E. M. Cheprakova, E. F. Zhilina [et al.] // Tetrahedron. — 2013. — Vol. 69. — № 25. — P. 5164-5172. |
Аннотация: | 5-Bromopyrimidine reacts with 2,2′-bithiophene, [2,2′:5′, 2″]terthiophene and 2-phenylthiophene in the presence of a palladium catalyst to give 5-(het)aryl substituted pyrimidines due to the palladium-catalyzed aryl-aryl C-C coupling. However 5-bromo-4-(het)aryl- pyrimidines have been prepared from the same starting materials through the SN H-reaction catalyzed by a Lewis acid. Conditions for both types of reactions were optimized. All components of the reaction mixtures, including by-products, have been elucidated by gas-liquid chromatography/mass- spectrometry. Evidence for the structure of 4- and 5-bithiophenyl-substituted pyrimidines has first been obtained by means of X-ray crystallography analysis. Molecular orbital calculations (TDDFT), as well as the redox and optical measurements for all new compounds have also been performed. © 2013 Elsevier Ltd. All rights reserved. |
Ключевые слова: | C-H BOND ACTIVATIONS MICROWAVE-ASSISTED SYNTHESIS NUCLEOPHILIC AROMATIC SUBSTITUTION OF HYDROGEN PALLADIUM PYRIMIDINES 2 PHENYLTHIOPHENE 2,2' DITHIOPHENE 5 BROMOPYRIMIDINE [2,2':5',2'']TERTHIOPHENE CHEMICAL COMPOUND HYDROGEN LEWIS ACID PALLADIUM PYRIMIDINE DERIVATIVE UNCLASSIFIED DRUG ARTICLE ARYLATION CALCULATION CATALYST CHEMICAL STRUCTURE COVALENT BOND LIQUID CHROMATOGRAPHY MASS FRAGMENTOGRAPHY MEASUREMENT MICROWAVE RADIATION NUCLEOPHILICITY PRIORITY JOURNAL REACTION OPTIMIZATION SUBSTITUTION REACTION X RAY CRYSTALLOGRAPHY |
URI: | http://elar.urfu.ru/handle/10995/27233 |
Идентификатор SCOPUS: | 84877725521 |
Идентификатор WOS: | 000319647600015 |
Идентификатор PURE: | 902269 |
ISSN: | 0040-4020 |
DOI: | 10.1016/j.tet.2013.04.062 |
Располагается в коллекциях: | Научные публикации ученых УрФУ, проиндексированные в SCOPUS и WoS CC |
Файлы этого ресурса:
Файл | Описание | Размер | Формат | |
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scopus-2013-0402.pdf | 2,5 MB | Adobe PDF | Просмотреть/Открыть |
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