Visible‐Light‐Promoted Switchable Synthesis of C‐3‐Functionalized Quinoxalin‐2(1<i>H</i>)‐ones

Abstract

Abstract A visible‐light‐promoted synthesis of quinoxalin‐2(1 H )‐ones has been developed using 9‐mesityl‐10‐methylacridinium perchlorate as an organo‐photocatalyst. The atmosphere‐controlled method (Ar/air) enabled the selective synthesis of hydroxyl‐ and acyl‐containing quinoxalin‐2(1 H )‐ones under mild reaction conditions without the use of any metal catalysts or toxic reagents. A fluorescent labelling experiment showed that hydroxyl‐containing quinoxalin‐2(1 H )‐ones may have utility in various biological applications as potent fluorophores. magnified image

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