International Journal of Green Nanotechnology Physics and Chemistry · 2009 · 39 citations · 23 references
Natural SciencesChemical EngineeringChemistryCatalysisGreen ChemistryOrganic ChemistryCatalyst PreparationCatalyst SynthesisCatalytic MaterialsGreen CatalysisOrganic SynthesisSolvent-free SynthesisGreen Catalyst SynthesisSolvent-free CatalysisSolvent-free Processing
ABSTRACT An efficient green procedure for the preparation of 12-aryl- or 12-alkyl-8,9,10,12-tetrahydrobenzo[α]xanthen-11-one derivatives, employing three-component one-pot condensation reaction of β-naphthol, aldehydes, and cyclic 1,3-dicarbonyl compounds, in the presence of Zr(HSO4)4 under solvent-free conditions, has been described. The present protocol offers several advantages such as high yields, shorter reaction time, simple workup, recovery and reusability of catalyst.
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