Bis(sulfone) as Bifunctional Reagent for the Alkylarylation of Alkenes and Alkynes under Photoredox Conditions

Herein, we report a strategy for the alkylarylation of unsaturated carbon-carbon bonds, wherein bis(sulfones) serve as dual-source donors to deliver alkyl and aryl groups in a single step, redefining their reactivity paradigm. Both alkenes and alkynes undergo efficient difunctionalization with broad functional group tolerance. Mechanistic studies reveal a cascade involving deprotonation, single-electron oxidation, radical addition and Smiles rearrangement.