Visible‐Light‐Triggered Quantitative Oxidation of 9,10‐Dihydroanthracene to Anthraquinone by O 2 under Mild Conditions

From a series of control experiments, free-radical quenching, and electron paramagnetic resonance spin-trapping results, the photo-oxygenation of DHA was probably initiated by its photoexcited state DHA*, and the latter could activate O2 to a superoxide anion radical through the transfer of its electron

Dabo Jiang; Wenwei Hu; Mengke Chen; Zaihui Fu; Anqun Su; Bo Yang; Feng Mao; Chao Zhang; Yachun Liu; Dulin Yin

2020

Scholarcy highlights

  • National and Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, Hunan, 410081 P.R. China
  • From a series of control experiments, free-radical quenching, and electron paramagnetic resonance spin-trapping results, the photo-oxygenation of DHA was probably initiated by its photoexcited state DHA*, and the latter could activate O2 to a superoxide anion radical through the transfer of its electron
  • This photo-oxidation was gradually dominated by the oxygenated product AQ as an active photocatalyst obtained from the oxidation of DHA by O2.−, and was accelerated with the rapid accumulation of AQ
  • The present photo-oxidation protocol is a good example of selective oxygenation based on the photoexcited substrate self-activated O2, which complies well with green chemistry ideals
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