Thioether Oxidation with H₂O₂ Catalyzed by Nb-Substituted Polyoxotungstates. Mechanistic Insights Научная публикация
| Журнал |
European Journal of Inorganic Chemistry
ISSN: 1434-1948 , E-ISSN: 1099-0682 |
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| Вых. Данные | Год: 2019, Том: 2019, Номер: 3-4, Страницы: 410-416 Страниц : 7 DOI: 10.1002/ejic.201801108 | ||||
| Ключевые слова | sulfoxidation • niobium •polyoxometalate• Lindqvist structure• hydrogen peroxide | ||||
| Авторы |
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| Организации |
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Информация о финансировании (2)
| 1 | Федеральное агентство научных организаций России | 0303-2016-0005 |
| 2 | Российский фонд фундаментальных исследований | 16-03-00827 |
Реферат:
Nb‐monosubstituted polyoxotungstates of the Lindqvist and Keggin structures, (Bu4N)3[Nb(O)W5O18] (1) and (Bu4N)4[PW11NbO40] (2), respectively, catalyze oxidation of organic sulfides with aqueous H2O2 in acetonitrile. The corresponding peroxocomplexes (Bu4N)3[Nb(O2)W5O18] (3) and (Bu4N)4[PW11Nb(O2)O39] (4) formed upon interaction of 1 and 2 with H2O2 are able to oxidize sulfides to sulfoxides and sulfones under stoichiometric conditions. The product analysis of the oxidation of thianthrene 5‐oxide, competitive sulfide‐sulfoxide oxidation and Hammett plot implicated electrophilic oxidative properties of 4 and a complex oxidative nature of 3. Protonation of peroxo complex 3 leading to the formation of the peroxo species (Bu4N)2[HNb(O2)W5O18] (5) strongly increases its electrophilicity, which has a great impact on its reactivity and sulfoxidation selectivity.
Библиографическая ссылка:
Zalomaeva O.V.
, Maksimchuk N.V.
, Maksimov G.M.
, Kholdeeva O.A.
Thioether Oxidation with H₂O₂ Catalyzed by Nb-Substituted Polyoxotungstates. Mechanistic Insights
European Journal of Inorganic Chemistry. 2019. V.2019. N3-4. P.410-416. DOI: 10.1002/ejic.201801108 WOS Scopus РИНЦ CAPlusCA OpenAlex
Thioether Oxidation with H₂O₂ Catalyzed by Nb-Substituted Polyoxotungstates. Mechanistic Insights
European Journal of Inorganic Chemistry. 2019. V.2019. N3-4. P.410-416. DOI: 10.1002/ejic.201801108 WOS Scopus РИНЦ CAPlusCA OpenAlex
Даты:
| Поступила в редакцию: | 14 сент. 2018 г. |
| Опубликована online: | 12 нояб. 2018 г. |
| Опубликована в печати: | 31 янв. 2019 г. |
Идентификаторы БД:
| Web of science: | WOS:000456856100014 |
| Scopus: | 2-s2.0-85057988744 |
| РИНЦ: | 38654826 |
| Chemical Abstracts: | 2018:2391711 |
| Chemical Abstracts (print): | 170:167897 |
| OpenAlex: | W2901137654 |