Abstract
We report a novel Ru-catalyzed regioselective alkylarylation of vinylarenes with alkyl halides and arenes via meta-C(sp2)-H bond functionalization to construct 1,1-diarylalkanes that generally show bioactivity. In this transformation, a wide spectrum of primary, secondary, and tertiary alkyl halides and electronically varied arenes was well-tolerated. This reaction is characterized by its exquisite regioselectivity of vinylarenes, unique meta-C(sp2)-H selectivity, and redox-neutral conditions. The mechanism presented was supported by radical probes and kinetic isotope effect studies.
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