A visible-light-induced C-3 alkylation of quinoxalin-2(1H)-ones with N,N,N′,N′-tetraalkylethylenediamine was achieved without an external photocatalyst. The mechanism showed that quinoxalin-2(1H)-ones could act as photocatalysts. The accessibility of the reagents and the green and mild reaction conditions made this protocol an alternative method to access C-3 alkylated quinoxalin-2(1H)-ones.
Y. Zhu, Y. Zhang, X. Zhao and K. Lu, Org. Biomol. Chem., 2024, 22, 8951 DOI: 10.1039/D4OB01494D
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