title: Well-defined alkylpalladium complexes with pyridine-carboxylate ligands as catalysts for the aerobic oxidation of alcohols.
abstract: Neophylpalladium complexes of the type [Pd(CH(2)CMe(2)Ph)(N-O)(L)], where N-O is picolinate or a related bidentate, monoanionic ligand (6-methylpyridine-2-carboxylate, quinoline-2-carboxylate, 2-pyridylacetate or pyridine-2-sulfonate) and L is pyridine or a pyridine derivative, efficiently catalyze the oxidation of a range of aliphatic, benzylic and allylic alcohols with oxygen, without requiring any additives. A versatile method is described which allows the synthesis of the above-mentioned complexes with a minimum synthetic effort from readily available materials. Comparison of the rates of oxidation of 1-phenylethanol with different catalysts reveals the influence of the structure of the bidentate N-O chelate and the monodentate ligand L on the catalytic performance of these complexes.
authors.affiliation: Instituto de Investigaciones Químicas, CSIC-Universidad de Sevilla. c/ Americo Vespucio, 49. 41092 Sevilla, Spain.
authors.forename: Cristóbal
authors.initials: C
authors.lastname: Melero
authors.forename: Oleg N
authors.initials: ON
authors.lastname: Shishilov
authors.forename: Eleuterio
authors.initials: E
authors.lastname: Álvarez
authors.forename: Pilar
authors.initials: P
authors.lastname: Palma
authors.forename: Juan
authors.initials: J
authors.lastname: Cámpora