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An efficient multicomponent method is described for the synthesis of a variety of trisubstituted 2-pyrones and polysubstituted phenols based on the Zn-catalyzed cascade reactions between ynone compounds and active methylene group containing diesters. The synthesis of titled compounds were achieved using Zn-catalyzed ynone synthesis followed by Knoevenagel condensation and elimination. Further, this methodology is applied to accomplish the synthesis of poylsubstuited phenols.HIGHLIGHTSPalladium and Ligand Free Zinc catalyzed One-Pot Synthesis of tri substituted 2-Pyrones and polysubstituted phenols.Economically liable method to synthesize the tri substituted 2-Pyrones and polysubstituted phenols products.Broad substrate scope.Synthesis of various tri substituted 2-Pyrones and polysubstituted phenols. Palladium and Ligand Free Zinc catalyzed One-Pot Synthesis of tri substituted 2-Pyrones and polysubstituted phenols. Economically liable method to synthesize the tri substituted 2-Pyrones and polysubstituted phenols products. Broad substrate scope. Synthesis of various tri substituted 2-Pyrones and polysubstituted phenols.

One-pot synthesis of trisubstituted 2-pyrones and polysubstituted phenols through Zn catalyzed cascade of ynone/condensation/elimination reactions