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Visible-Light-Induced Recyclable g-C3N4 Catalyzed C-H Hydroxylation of Quinoxalin-2(1H)-ones

Long-Yong Xie*, Qi-Xin Xie, Yi-Dan Chen, Jia-Yi Zhou, Sha Peng*

*College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Hunan, 425100, P. R. of China, Email:,

L.-Y. Xie, Q.-X. Xie, Y.-D. Chen, J.-Y. Zhou, S. Peng, Synthesis, 2023, 55, 443-450.

DOI: 10.1055/a-1899-5409

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A visible-light-promoted oxidation of quinoxalin-2(1H)-ones provides various quinoxalinediones in very good yields under an ambient air atmosphere using recyclable graphitic carbon nitride (g-C3N4) as a heterogeneous photocatalyst. Importantly, the heterogeneous catalyst can be used at least six times without significant loss of activity.

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Key Words

visible light, quinoxalinediones, oxygen, g-C3N4, photochemistry, heterogeneous photocatalysts

ID: J66-Y2023