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Polystyrene-supported p-toluenesulfonic acid (PS/PTSA): as a highly active and reusable heterogeneous bronsted acid catalyst for the synthesis of novel 1H-indol-3-yl-4H-chromene-3-carbonitriles under neat conditions

Novel 1H-indol-3-yl-4h-chromene-3-carbonitrilesChemical EngineeringEngineeringPolystyrene-supported P-toluenesulfonic AcidOrganic ChemistryCatalysisHomogeneous CatalysisChemistryAcid CatalystAsymmetric CatalysisSynthetic ChemistryCatalytic Synthesis