1,2-Alkylarylation of activated alkenes with dual C-H bonds of arenes and alkyl halides toward polyhalo-substituted oxindoles

We describe here a new visible light facilitated radical strategy for 1,2-alkylarylation of activated alkenes with a C(sp(2))-H bond of arenes and a C(sp(3))-H bond of alkyl halides. This method achieves selective scission of the C(sp(3))-H bond adjacent to halide atoms leading to a halo-substituted alkyl radical, and provides a new synthetic utilization of aryl halides toward polyhalo-substituted oxindoles in good to excellent yields. Moreover, the concise transformation of the products, polyhalo-substituted oxindoles, into vinyl halides and alkynyl halides was also illustrated.