Palladium nanoparticles supported on graphene and reduced graphene oxide as efficient recyclable catalyst for the Suzuki?Miyaura reaction of potassium aryltrifluoroborates

MELANIAGÓMEZ-MARTÍNEZ; EDUARDO BUXADERAS; ISIDRO M. PASTOR; DIEGO A. ALONSO

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2015 vol. 404 p. 1 - 7

1381-1169

Palladium nanoparticles supported on graphene platelets have been efficiently used as catalyst in the Suzuki?Miyaura coupling between aryl bromides and potassium aryltrifluoroborates using 0.1 mol% of Pd and potassium carbonate as base in MeOH/H2O as solvent at 80 °C. The reaction can be performed using conventional and microwave heating showing the catalyst high reusability, particularly with microwaves, where lower aggregation of Pd nanoparticles has been observed. A dissolution/re-deposition catalytic mechanism is proposed, based on the fact that palladium leaching to the solution is detected under microwave irradiation.