Mechanisms of Oxidant Activation in Alkene Epoxidation Catalyzed by Monosubstituted Heteropolytungstates Научная публикация
| Журнал |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
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| Вых. Данные | Год: 1997, Том: 38, Номер: 4, Страницы: 507-512 Страниц : 6 | ||
| Ключевые слова | MOLECULAR-OXYGEN; ORGANIC HYDROPEROXIDES; ALKYLPEROXO COMPLEXES; MANGANESE-PORPHYRINS; ALKYL HYDROPEROXIDES; OXIDATION CATALYSTS; OLEFIN EPOXIDATION; HYDROCARBONS; SYSTEM; METALLOPORPHYRINS | ||
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Реферат:
The catalytic activity of monosubstituted heteropolytungstates PW11MOn-39 (PW11M; M = Co(II), Mn(II) Cu(II), Ti(IV), Ru(IV), V(V), Nb(V)) was studied in alkene oxidations by various oxidants (tert-butyl hydroperoxide, iodosobenzene, and dioxygen) in the presence of isobutyraldehyde (IBA). Activity series of PW11M were found to be different for the oxidants studied. The composition of reaction products depends on the alkene structure and the nature of oxygen donor. The radical-chain mechanism was proven for the reactions of alkenes with t-BuOOH and O2/IBA where alkylperoxy and acylperoxy radicals are active epoxidants. Prior coordination of an oxidant to heteropoly anion is not a necessary stage for the oxidant homolytic activation. Alkene epoxidation by iodosobenzene occurs via oxidant coordination to the catalyst and has a heterolytic mechanism, which involves the formation of metal oxy species.
Библиографическая ссылка:
Kholdeeva O.A.
, Grigorʹev V.A.
, Maksimov G.M.
, Zamaraev K.I.
Mechanisms of Oxidant Activation in Alkene Epoxidation Catalyzed by Monosubstituted Heteropolytungstates
Kinetics and Catalysis. 1997. V.38. N4. P.507-512. WOS Scopus РИНЦ CAPlusCA
Mechanisms of Oxidant Activation in Alkene Epoxidation Catalyzed by Monosubstituted Heteropolytungstates
Kinetics and Catalysis. 1997. V.38. N4. P.507-512. WOS Scopus РИНЦ CAPlusCA
Оригинальная:
Холдеева О.А.
, Григорьев В.А.
, Максимов Г.М.
, Замараев К.И.
Механизмы активации окислителей в реакциях эпоксидирования алкенов, катализируемых монозамещенными гетерополивольфраматами
Кинетика и катализ. 1997. Т.38. №4. С.554-559. РИНЦ РЖ ВИНИТИ
Механизмы активации окислителей в реакциях эпоксидирования алкенов, катализируемых монозамещенными гетерополивольфраматами
Кинетика и катализ. 1997. Т.38. №4. С.554-559. РИНЦ РЖ ВИНИТИ
Даты:
| Поступила в редакцию: | 20 нояб. 1995 г. |
| Опубликована в печати: | 1 июл. 1997 г. |
Идентификаторы БД:
| Web of science: | WOS:A1997XU99700011 |
| Scopus: | 2-s2.0-0005576237 |
| РИНЦ: | 13257127 |
| Chemical Abstracts: | 1997:597175 |
| Chemical Abstracts (print): | 127:292785 |