title: Cobalt-catalyzed C-H borylation.
abstract: A family of pincer-ligated cobalt complexes has been synthesized and are active for the catalytic C-H borylation of heterocycles and arenes. The cobalt catalysts operate with high activity and under mild conditions and do not require excess borane reagents. Up to 5000 turnovers for methyl furan-2-carboxylate have been observed at ambient temperature with 0.02 mol % catalyst loadings. A catalytic cycle that relies on a cobalt(I)-(III) redox couple is proposed.
authors.affiliation: Department of Chemistry, Princeton University , Princeton, New Jersey 08544, United States.
authors.forename: Jennifer V
authors.initials: JV
authors.lastname: Obligacion
authors.forename: Scott P
authors.initials: SP
authors.lastname: Semproni
authors.forename: Paul J
authors.initials: PJ
authors.lastname: Chirik