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Visible-light photoredox-catalyzed desulfurization of thiol- and disulfide-containing amino acids and small peptides

Lee, Myungmo ; Neukirchen, Saskia ; Cabrele, Chiara ; Reiser, Oliver


A scalable protocol for the desulfurization of cysteine by using visible light, the photocatalyst Ir(dF(CF3)ppy)(2)(dtb-bpy)PF6 and triethylphosphite under biphasic reaction conditions has been developed. The loading of the catalyst can be as low as 0.01mol%, which can be efficiently removed during the workup (0.3ppm), giving rise to the corresponding desulfurized product in high yields. This ...


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