Boosting activity of molecular oxygen by pyridinium-based photocatalysts for metal-free alcohol oxidation

Shuai Ma, Jing Wang Cui, Cai Hui Rao, Meng Ze Jia, Yun Rui Chen, Jie Zhang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

An eco-friendly and economical approach for the photocatalytic oxidation of organic inter-mediates by air under mild conditions is highly desirable in green and sustainable chemistry, where the photogeneration of active oxygen species plays a key role in improving conversion efficiency and selectivity. By using pyridinium derivatives as molecular mediators for electron transfer and energy transfer, the simultaneous activation of O2from air into superoxide radicals and singlet oxygen species can be achieved, and a photoinduced electron transfer catalytic system for the oxidation of alcohols has been developed. Thus, we have successfully simplified the complicated catalytic system into a single molecular catalyst without any additional noble metals and co-catalysts/additives. The current photocatalytic system shows high catalytic efficiency not only for aromatic alcohols but also for aliphatic alcohols that are generally difficult to undergo aerobic oxidation at room temperature under air atmosphere, representing an ideal photocatalytic platform for green and economical organic syntheses.

Original languageEnglish
Pages (from-to)1337-1343
Number of pages7
JournalGreen Chemistry
Volume23
Issue number3
DOIs
Publication statusPublished - 7 Feb 2021

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