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A new iron-facilitated silver-mediated radical 1,2-alkylarylation of styrenes with α-carbonyl alkyl bromides and indoles is described, and two new C-C bonds were generated in a single step through a sequence of intermolecular C(sp(3)-Br functionalization and C(sp(2))-H functionalization across the alkenes. This method provides an efficient access to alkylated indoles with broad substrate scope and excellent selectivity.
Ouyang et al. (2016) studied this question.