A coupled catalysis was performed using a riboflavin-derived organocatalyst and molecular iodine, which successfully promoted the aerobic oxidation of thiols to disulfides under metal-free mild conditions. The activation of molecular oxygen occurred smoothly at room temperature through the transfer of electrons from the iodine catalysis to the biomimetic flavin catalysis, which formed the basis of the green oxidative synthesis of disulfides from thiols.
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