We reported a visible‐light‐induced iron‐catalyzed α ‐alkylation of oxindoles with alcohols to offer a variety of α ‐alkyled oxindoles at room temperature. This reaction featured broad substrate scope with good functional tolerance under simple conditions. Through a series of controlled experiments, we tried to elucidated the important role of light in this borrowing hydrogen (BH) reaction.
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Song et al. (2024) studied this question.
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