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Photocatalytic oxidation of benzene to phenol using dioxygen as an oxygen source and water as an electron source in the presence of a cobalt catalyst

Title
Photocatalytic oxidation of benzene to phenol using dioxygen as an oxygen source and water as an electron source in the presence of a cobalt catalyst
Authors
Han, Ji WonJung, JieunLee, Yong-MinNam, WonwooFukuzumi, Shunichi
Ewha Authors
남원우Shunichi Fukuzumi
SCOPUS Author ID
남원우scopus; Shunichi Fukuzumiscopus
Issue Date
2017
Journal Title
CHEMICAL SCIENCE
ISSN
2041-6520JCR Link2041-6539JCR Link
Citation
vol. 8, no. 10, pp. 7119 - 7125
Publisher
ROYAL SOC CHEMISTRY
Indexed
SCI; SCIE; SCOPUS WOS
Abstract
Photocatalytic hydroxylation of benzene to phenol by dioxygen (O-2) occurs under visible light irradiation of an O-2-saturated acetonitrile solution containing [Ru-II(Me(2)phen)(3)](2+) as a photocatalyst, [Co-III(Cp*)(bpy)(H2O)](2+) as an efficient catalyst for both the water oxidation and benzene hydroxylation reactions, and water as an electron source in the presence of Sc(NO3)(3). The present study reports the first example of photocatalytic hydroxylation of benzene with O-2 and H2O, both of which are the most green reagents, under visible light irradiation to afford a high turnover number (e.g., >500). Mechanistic studies revealed that the photocatalytic reduction of O-2 to H2O2 is the rate-determining step, followed by efficient catalytic hydroxylation of benzene to phenol with H2O2, paving a new way for the photocatalytic oxygenation of substrates by O-2 and water.
DOI
10.1039/c7sc02495a
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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