Linear polystyrene-stabilized palladium nanoparticles-catalyzed C-C coupling reaction in water.

Linear polystyrene-stabilized PdO nanoparticles (PS-PdONPs) were prepared in water by thermal decomposition of Pd(OAc)(2) in the presence of polystyrene. The immobilization degree of palladium was dependent on the molecular weight of polystyrene, while the size of the Pd nanoparticles was not. Linear polystyrene-stabilized Pd nanoparticles (PS-PdNPs) were also prepared using NaBH(4) and phenylboronic acid as reductants. The catalytic activity of PS-PdONPs was slightly higher than that of PS-PdNPs for Suzuki coupling reaction in water. PS-PdONPs exhibited high catalytic activity for Suzuki and copper-free Sonogashira coupling reactions in water and recycled without loss of activity.

Facile preparation of linear polystyrene-stabilized Pd nanoparticles in water.

Palladium nanoparticles can be readily stabilized onto linear polystyrene by a simple procedure. The resultant polystyrene-stabilized Pd has high catalytic activity for Suzuki-Miyaura cross-coupling reaction in water and can be reused without loss of activity.