Ji HT, Song HY, Hou JC, Xu YD, Zeng LN, He WM. Recyclable V
2O
5/g-C
3N
4 Heterojunction-Catalyzed Visible-Light-Promoted C3-H Trifluoromethylation of Quinoxalin-2-(1
H)-ones.
J Org Chem 2024;
89:9543-9550. [PMID:
38874168 DOI:
10.1021/acs.joc.4c00937]
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Abstract
A visible-light-initiated C-H trifluoromethylation of quinoxalin-2(1H)-ones was established using a Z-scheme V2O5/g-C3N4 heterojunction as a recyclable photocatalyst in an inert atmosphere at room temperature under additive-free and mild conditions. A variety of trifluoromethylated quinoxalin-2-(1H)-one derivatives were heterogeneously generated in moderate to high yields, exhibiting good functional group tolerance. Remarkably, the recyclable V2O5/g-C3N4 catalyst could be reused five times with a slight loss of catalytic activity.
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