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An aggregation-enabled photo-Fries rearrangement reaction for transforming thiophenols into unsymmetrical disulfides with visible light as the illumination source has been developed for the first time. This Lewis acid- and UV-free method proceeds smoothly under mild conditions and exhibits a relatively broad substrate scope and good site selectivity. Mechanistic studies indicated the involvement of an aggregation-enabled successive thiyl radical generation, resonance, tautomerism, and multistep selective radical recombination process.
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Wang et al. (2025) studied this question.
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