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Divergent and Synergistic Photocatalysis: Hydro- and Oxo-Alkylation of Vinyl Arenes for the Stereoselective Synthesis of Cy-clopentanols via a Formal [4+1]-Annulation of 1,3-Dicarbonyls
The controllable divergent reactivity of 1,3-dicarbonyls is described, which enables the efficient hydro- and oxo-alkylation of vinyl arenes. Both reaction pathways are initiated through the formation of polarity reversed C-centered-radical intermediates at the active methylene center of 1,3-dicarbonyls via direct photocatalytic C-H bond transformations. The oxoalkylation of alkenes is achieved under aerobic conditions via a Cu(II)-photo-mediated rebound mechanism while the correspondingdoi:10.26434/chemrxiv-2022-9qsdv fatcat:np4kvpeufra27np3w56hvl3gte