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Clean Synthesis of 1,8-Dioxo-octahydroxanthene Derivatives Catalyzed by<i>p</i>-Dodecylbenezenesulfonic Acid in Aqueous Media
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2004
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Chemical EngineeringNovel OrganocatalystsDerivativesEngineeringConvenient ApproachP-dodecylbenezenesulfonic AcidGreen SolventClean SynthesisOrganic ChemistryOrganometallic CatalysisCatalysisChemistryAqueous MediaHeterocycle Chemistry1,8-Dioxo-octahydroxanthene DerivativesChemical DerivativeSynthetic ChemistryCatalytic Synthesis
An efficient and convenient approach to the synthesis of 3,3,6,6-tetramethyl-9-aryl-1,8-dioxo-octahydroxanthene derivatives using p-dodecylbenezenesulfonic acid (DBSA) as the catalyst (10 mol%) is described. This method provides several advantages such as being environmentally friendly, processing high yields and simple work-up procedure. In addition, water was chosen as a green solvent.