During the preparation of this manuscript, Yu et al. reported examples of irradiation-induced palladium-catalyzed intermolecular C–H alkylation of heteroarene using 1-bromoadamantane. In Yu’s report, secondary and tertiary alkyl bromides possessing eliminable β-H were not demonstrated as amenable substrates for intermolecular C(sp2)–H alkylation of heteroarene, see: Zhou W.-J. Cao G.-M. Shen G. Zhu X.-Y. Gui Y.-Y. Ye J.-H. Sun L. Liao L.-L. Li J. Yu D.-G.
Angew. Chem. Int. Ed. 2017;
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