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
- 등재 SCIE, SCOPUS
- 발행기관 ROYAL SOC CHEMISTRY
- 발행년도 2017
- URI http://www.dcollection.net/handler/ewha/000000147287
- 본문언어 영어
- Published As http://dx.doi.org/10.1039/c7sc02495a
초록/요약
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.
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