Metal-Free Aerobic C-H Oxidation of Methylarenes to Aromatic Aldehydes by Sulfur-Containing Tetracyclic Compounds as Visible- Light Photocatalysts

Takanori Shibata*, Mika Akino, Ayato Sekine, Mamoru Ito

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Oxidation of benzylic sp3 C-H bonds smoothly proceeded at ambient temperature under blue LED (465 nm) photo-irradiation using sulfur-containing tetracyclic compounds as photocatalysts. The use of 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) as a cosolvent was the key to success: various toluene derivatives were selectively oxidized to substituted benzaldehydes without overoxidation. Preliminary mechanism studies were undertaken, including electron spin resonance (ESR) spectroscopy analyses.

Original languageEnglish
Pages (from-to)768-770
Number of pages3
JournalBulletin of the Chemical Society of Japan
Volume95
Issue number5
DOIs
Publication statusPublished - 2022 May

Keywords

  • Aerobic oxidation
  • Metal-free
  • Photocatalysts

ASJC Scopus subject areas

  • Chemistry(all)

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