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Metal-Free Aerobic C–H Oxidation of Methylarenes to Aromatic Aldehydes by Sulfur-Containing Tetracyclic Compounds as Visible-Light Photocatalysts
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 co-solvent was the key to success: various toluene derivat...
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Published in: | Bulletin of the Chemical Society of Japan 2022-05, Vol.95 (5), p.768-770 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | 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 co-solvent was the key to success: various toluene derivatives were selectively oxidized to substituted benzaldehydes without over-oxidation. Preliminary mechanism studies were undertaken, including electron spin resonance (ESR) spectroscopy analyses. |
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ISSN: | 0009-2673 1348-0634 |
DOI: | 10.1246/bcsj.20220014 |