A novel, hydrophilic and recyclable methoxypolyethylene glycol (PEG)-modulated s-triazine-based multifunctional Schiffbase/N,P-ligand L9 was prepared and used in Pd-catalyzed Heck-type carbonylative couplingreactions, affording diverse chalcone derivatives and 1,4-dicarbonyl esters in good yields.