Abstract

A novel, efficient and one-pot method for preparation of 1, 8-dioxo-octahydroxanthene derivatives is reported using Nafion-H as an effective heterogeneous catalyst under thermal and solvent-free conditions. This method has the advantages of high yields, a cleaner reaction, simple methodology, easy work-up and greener conditions. The catalyst is easily prepared, stable, reusable and efficient under the reaction conditions.

Keywords: 1, 8-Dioxo-octahydroxanthene, 5, 5-Dimethyl-1, 3-cyclohexanedione, Nafion-H, solvent-free, heterogeneous catalyst.