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AlCl3-ZnCl2/SiO2 as an efficient catalyst for the synthesis of 1,8-dioxo-octahydroxanthene under solvent-free condition

Kirti S.Niralwad, Kiran F.Shelke, Bapurao B.Shingate, Murlidhar S.Shingare

Amixture ofAlCl3-ZnCl2 supported on silica gel has been found to be a new efficientmediumfor the synthesis of 1,8-dioxo-octahydroxanthene via condensation of aromatic aldehydes and dimedone under solvent-free condition with excellent yields.