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

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The title triazines are obtained by sequential substitution of the 2‐ and 4‐chloro groups of 2,4‐dichloro‐1,3,5‐triazines by regioselective Sonogashira coupling.