title: Bimetallic palladium catalysis: direct observation of Pd(III)-Pd(III) intermediates.
abstract: PhI(OAc)(2) is a common oxidant for Pd-catalyzed C-H bond functionalizations. Mechanistic hypotheses since the 1960s have suggested a Pd(II)/Pd(IV) mechanism. Here we present evidence for the relevance of bimetallic Pd(III) complexes to catalysis. A bimetallic Pd(III) acetate was isolated and can afford product by bimetallic reductive elimination.
authors.affiliation: Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA.
authors.forename: David C
authors.initials: DC
authors.lastname: Powers
authors.forename: Matthias A L
authors.initials: MA
authors.lastname: Geibel
authors.forename: Johannes E M N
authors.initials: JE
authors.lastname: Klein
authors.forename: Tobias
authors.initials: T
authors.lastname: Ritter
mesh_terms: D002384:Catalysis; D007700:Kinetics; D010165:Palladium / Q000737:chemistry*
chemical_list: D010165:Palladium