Synthesis of Polyester Amide by Carbonylation–Polycondensation Reaction Using Immobilized Palladium Metal Containing Ionic Liquid on SBA-15 as a Phosphine-Free Catalytic System

A novel and simple method for the synthesis of aromatic linear polyester amides has been developed by the carbonylation–polycondensation reaction of aromatic diiodides and aminohydroxy compounds in the presence of ImmPd-IL@SBA-15 catalytic system. Polyester amides with moderate intrinsic viscosity were synthesized in excellent yields using the ImmPd-IL@SBA-15 catalyst and represents efficient heterogeneous and phosphine-free approach for the synthesis of various linear polyester amide derivatives. The ImmPd-IL@SBA-15 catalyst solves the basic problem of catalyst recovery and furnishes good to excellent yield of desired product within short reaction time. The recycled catalyst was characterized using the XPS and TEM analysis. The catalyst was recycled four times without significant loss in activity. Graphical Abstract Catalytic polyester amide synthesis