Silver Functionalized on Hydroxyapatite-Core-Shell Magnetic Γ-Fe2o3: An Enviromentaly and Readily Recyclable Nanatalyst For the One-Pot Synthesis of 14h-Dibenzo[A,J]Xanthenes Derivatives

An efficient and simple procedure for the preparation of silver functionalized on hydroxyapatite-core-shell magnetic γ-fe2o3 nanoparticles (γ-fe2o3@hap-ag) as an enviromentaly efficient magnetically recoverable and reusable catalyst is described, and it is used for the one-pot synthesis of 14-aryl-14h-dibenzo[a,j]xanthenes via a cost-effective and atom-economical procedure from substituted benzaldehydes and β-naphthol under solvent-free conditions at 60 °c. the attractiveness of this protocol lies in its green approach in that the catalyst is easily recoverable using an external magnet, which makes the process economical.