Copper-Free Sonogashira Couplingin Water with Linear Polystyrene-Stabilized PdO Nanoparticles

Linear polystyrene-stabilized PdO nanoparticles generated by thermal decomposition of palladium acetate have high catalytic activity for Sonogashira coupling in water under copper-free conditions. The catalyst was recovered and reused at least four times without any loss of catalytic activity.