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À propos de : Benzyl (Phenyl) γ- and δ-lactones via Photoinduced Tandem Ar−C, C−OBond Formation        

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  • Benzyl (Phenyl) γ- and δ-lactones via Photoinduced Tandem Ar−C, C−OBond Formation
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  • A convenient metal-free procedure for the preparation of benzyl (phenyl) γ- and δ-lactones is illustrated. This method is based on the photochemical generation of phenyl cations and their reaction with 3, 4, or 5-alkenoic acids. This leads to a phenyl- or benzyl-substituted lactone by tandem formation of an aryl−C and C−O bond. The intermediacy of a phenonium ion imparts a full regio- and stereoselectivity to the reaction.
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