title: Towards a zero-waste oxidative coupling of nonactivated aromatics by supported gold nanoparticles.
abstract: We show that gold nanoparticles are able to perform the direct oxidative coupling of nonactivated aromatics with O2 as the only co-reagent. In this reaction, the aromatic acts both as reactant and solvent. Biphenyl, for example, can be obtained from benzene with high selectivity and a turnover number (TON) of 230 per pass. Similarly, several substituted biaryls can be prepared. Pd performs only one TON and even when a second catalytic functionality is introduced, together with strong acidic conditions, TON is always lower than 100. Other catalysts require iodine for performing the reaction, leading to 2 kg of waste for 1 kg of biphenyl formed, whereas no waste is created by the oxidative coupling with gold nanoparticles.
authors.affiliation: Instituto de Tecnología Química, Universidad Politécnica de Valencia-Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos s/n, 46022 Valencia (Spain), Fax: (+34) 96-387-7800. psername@itq.upv.es.
authors.forename: Pedro
authors.initials: P
authors.lastname: Serna
authors.forename: Avelino
authors.initials: A
authors.lastname: Corma
mesh_terms: D002384:Catalysis; D006046:Gold / Q000737:chemistry*; D055772:Green Chemistry Technology; D006841:Hydrocarbons, Aromatic / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D058451:Oxidative Coupling
chemical_list: D006841:Hydrocarbons, Aromatic; D006046:Gold
keywords: arenes; cc coupling; gold; nanoparticles; supported catalysts