European Journal of Organic Chemistry · 2013 · 82 citations · 23 references
Natural SciencesChemical EngineeringChemistryCatalysisGreen ChemistryReaction EngineeringCatalytic MechanismsPhotocatalysisPhotochemical SynthesisPhotochemistryRedox CatalysisRedox ReactionsBlue Light ExposurePhotocatalytic MaterialsPhotocatalytic OxidationPhotocatalytic SemiconductorsPhotocatalytic SynthesisPhotoredox CatalysisVisible-light Photocatalysis
Abstract The desulfonylation of β‐arylketosulfones has been achieved in good to excellent yields by using 3‐W blue LEDs light, 1 mol‐% organic dye eosin Y bis(tetrabutylammonium salt) as photocatalyst, and diisopropylethylamine as reducing agent. Mechanistic studies demonstrate that oxidative quenching of the excited eosin Y by β‐arylketosulfones plays a crucial role in the present photoredox catalytic cycle.
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