Low‐Spin and High‐Spin Perferryl Intermediates in Non‐Heme Iron Catalyzed Oxidations of Aliphatic C–H Groups Научная публикация
| Журнал |
Chemistry - A European Journal
ISSN: 0947-6539 , E-ISSN: 1521-3765 |
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| Вых. Данные | Год: 2021, Том: 27, Номер: 28, Страницы: 7781-7788 Страниц : 8 DOI: 10.1002/chem.202004395 | ||
| Ключевые слова | biomimetic chemistry; iron; intermediate; oxidation; selectivity | ||
| Авторы |
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| Организации |
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Информация о финансировании (1)
| 1 | Российский научный фонд | 17-13-01117 |
Реферат:
The selectivity patterns of iron catalysts of the Fe(PDP) family in aliphatic C–H oxidation with H 2 O 2 have been studied (PDP = N , N ′‐bis(pyridine‐2‐ylmethyl)‐2,2′‐bipyrrolidine). Cyclohexane, adamantane, 1‐bromo‐3,7‐dimethyloctane, 3,7‐dimethyloctyl acetate, (–)‐acetoxy‐ p ‐menthane, and cis ‐1,2‐dimethylcyclohexane were used as substrates. The studied catalyst systems generate low‐spin ( S = 1/2) oxoiron(V) intermediates or high‐spin ( S = 3/2) oxoiron(V) intermediates, depending on the electron‐donating ability of remote substituents at the pyridine rings. The low‐spin perferryl intermediates demonstrate lower stability and higher reactivity toward aliphatic C–H groups of cyclohexane than their high‐spin congeners, according to the measured self‐decay and second‐order rate constants k 1 and k 2 . Unexpectedly, there appears to be no uniform correlation between the spin state of the oxoiron(V) intermediates, and the chemo‐ and regioselectivity of the corresponding catalyst systems in the oxidation of the considered substrates. This contrasts with the asymmetric epoxidations by the same catalyst systems, in which case the epoxidation enantioselectivity increases when passing from the systems featuring the more reactive low‐spin perferryl intermediates to those with their less reactive high‐spin congeners.
Библиографическая ссылка:
Zima A.M.
, Lyakin O.Y.
, Bryliakov K.P.
, Talsi E.P.
Low‐Spin and High‐Spin Perferryl Intermediates in Non‐Heme Iron Catalyzed Oxidations of Aliphatic C–H Groups
Chemistry - A European Journal. 2021. V.27. N28. P.7781-7788. DOI: 10.1002/chem.202004395 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex
Low‐Spin and High‐Spin Perferryl Intermediates in Non‐Heme Iron Catalyzed Oxidations of Aliphatic C–H Groups
Chemistry - A European Journal. 2021. V.27. N28. P.7781-7788. DOI: 10.1002/chem.202004395 WOS Scopus РИНЦ CAPlusCA PMID OpenAlex
Даты:
| Поступила в редакцию: | 29 сент. 2020 г. |
| Принята к публикации: | 29 мар. 2021 г. |
| Опубликована online: | 29 мар. 2021 г. |
| Опубликована в печати: | 17 мая 2021 г. |
Идентификаторы БД:
| Web of science: | WOS:000645494000001 |
| Scopus: | 2-s2.0-85105170010 |
| РИНЦ: | 46035648 |
| Chemical Abstracts: | 2021:1009054 |
| Chemical Abstracts (print): | 177:60156 |
| PMID (PubMed): | 33780054 |
| OpenAlex: | W3148336394 |