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Effects of Lewis Acids on Photoredox Catalysis

Title
Effects of Lewis Acids on Photoredox Catalysis
Authors
Fukuzumi, ShunichiJung, JieunLee, Yong-MinNam, Wonwoo
Ewha Authors
남원우이용민Shunichi Fukuzumi정지은
SCOPUS Author ID
남원우scopus; Shunichi Fukuzumiscopus; 정지은scopus
Issue Date
2017
Journal Title
ASIAN JOURNAL OF ORGANIC CHEMISTRY
ISSN
2193-5807JCR Link2193-5815JCR Link
Citation
vol. 6, no. 4, pp. 397 - 409
Keywords
electron transferenantioselectivityLewis acidsoxidationphotochemistry
Publisher
WILEY-V C H VERLAG GMBH
Indexed
SCIE; SCOPUS WOS
Abstract
The reactivity of organic photoredox catalysts in oxidation reactions is enhanced by the addition of Lewis acids, which bind to the catalyst to increase its oxidizing ability. Redox-inactive metal ions, such as Sc3+, also act as Lewis acids and can bind to flavins to increase their one-electron reduction potentials and photocatalytic stability. The Sc3+ ion can bind to acridine and pyrene to enhance their photoredox catalytic activity in the oxidation of substrates by dioxygen. The binding of Lewis acids to radical anions enhances their overall photocatalytic activity by prohibiting a back electron transfer from the radical anions of substrates to the oxidized photocatalysts. The photocatalytic asymmetric oxidation of terminal olefins by using water as the oxygen source with a mononuclear nonheme chiral manganese complex has been made possible by the addition of acetic acid, which is essential to afford the products with high enantioselectivity.
DOI
10.1002/ajoc.201600576
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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