Toluene, p-xylene and mesitylene were cleanly converted to their corresponding monoaldehydes via mild photooxygenation utilizing transition metal and main group β-CF3-substituted corroles. Aldehyde yield increased as more electron-donating CH3 groups are present on the substrate. 4-P was most efficient (TON ∼ 1072, mesitylene) via the singlet oxygen vis the superoxide mechanism.
X. Zhan, S. Kolanu, S. Fite, Q. Chen, W. Lee, D. G. Churchill and Z. Gross, Photochem. Photobiol. Sci., 2020, 19, 996 DOI: 10.1039/D0PP00218F
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