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A visible‐light‐induced Rose bengal catalyzed C3‐trifluoroethylation of quinoxalin‐2‐(1H)‐ones is reported. A wide range of quinoxalin‐2‐(1H)‐ones was compatible, which led to the corresponding products in moderate to good yields. A gram‐scale reaction proceeded well and afforded an efficient route to prepare C3‐trifluoroethylated quinoxalin‐2‐(1H)‐ones.
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