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“Iron-Catalyzed C-H Borylation of Arenes” Dombray, T.; Werncke, C. G.; Jiang, S.; Grellier, M.; Vendier, L.; Bontemps, S.; Sortais, J-B.; Sabo-Etienne, S.; Darcel, C. J. Am. Chem. Soc. 2015, ASAP. DOI: 10.1021/jacs.5b00895
C-H borylation, itself a green reaction for generating useful borylated compounds, is traditionally catalyzed by Ir and Rh. Much of the work has been conducted by John Hartwig’s group at Berkeley and Mitch Smith’s group at Michigan St. French scientists have now reported an iron-catalyzed version, which complements recent reports with Co complexes and dinuclear transition metal complexes. I especially like that the reported reaction is free of H2 acceptors and utilizes light to activate the catalyst.