Z Manouchehri - Department of Chemistry, Faculty Of basic Science Babol Noshirvani University Of Technology, Babol, Iran
S Habibzadeh - Department of Chemistry, Faculty Of basic Science Babol Noshirvani University Of Technology, Babol, Iran
M Amininasab - Department of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj, Iran

An efficient and simple procedure for the synthesis of 1,8-dioxo-octahydroxanthenes from the aromatic aldehydes and 5,5dimethylcyclohexane-1,3-dione (dimedone) in the presence of Fe3O4@SiO2@COOH Polymerized as an inexpensive and reusable catalyst is described. The salient features of this methodology are: high yields, short reaction times, solvent-free conditions

Xanthene, Solid acid Catalyst, Dimedone, Aldehyde