Synthesis 2023; 55(03): 443-450
DOI: 10.1055/a-1899-5409
paper

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
We are grateful to the National Natural Science Foundation of China (22101082) and the Natural Science Foundation of Hunan Provincial Natural Science Foundation of China (2020JJ5203).


Abstract

A visible-light-promoted hydroxylation of quinoxalin-2(1H)-ones using recyclable graphitic carbon nitride (g-C3N4) as a heterogeneous photocatalyst has been developed. This protocol enables the selective synthesis of various hydroxyl-containing quinoxalin-2(1H)-ones in good to excellent yields under an ambient air atmosphere. Importantly, this heterogeneous catalyst can be used at least six times without significant loss of activity.

Supporting Information



Publication History

Received: 18 May 2022

Accepted after revision: 13 July 2022

Accepted Manuscript online:
13 July 2022

Article published online:
20 September 2022

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