Nonpolar biphasic catalysis: Sonogashira and Suzuki coupling of aryl bromides and chlorides

Palladium–phosphine catalysts which are phase-tagged with soluble poly(4-methylstyrene) can be used for efficient carbon–carbon coupling reactions by nonpolar biphasic catalysis with high recyclability as evidenced by high yields, constant tof of the catalyst and the absence of significant leaching of the catalyst into the polar product phase.