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Reusable Visible Light Photoredox Catalysts; Catalyzed Benzylic C(sp3)–H Functionalization/Carbocyclization Reactions
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2012
Year
Chemical EngineeringFunctionalization/carbocyclization ReactionsEngineeringPhotochemistryFunctionalization/carbocyclization ReactionFunctionalized 1Mechanistic PhotochemistryPhotoredox ProcessSynthetic PhotochemistryPhotocatalysisOrganic ChemistryBenzylic CCatalysisChemistry
The C(sp<sup>3</sup>)–H functionalization/carbocyclization reaction through the oxidative quenching of visible light photoredox catalysts is established for constructing functionalized 1<i>H</i>-indenes. The process is general for a wide range of benzylic C(sp<sup>3</sup>)–H bonds and is highly compatible with common functional groups. Importantly, the visible light photoredox catalysts can be recovered and reused at least three times without loss of catalytic activity.