Nano-Fe3O4 encapsulated-silica particles bearing sulfonic acid groups as an efficient, eco-friendly and magnetically recoverable catalyst for synthesis of various xanthene derivatives under solvent-free conditions

• Main Authors: Firouzeh Nemati, Samane Sabaqian
• Format: Article
• Language: English
• Published: Elsevier 2017-01-01
• Series: Journal of Saudi Chemical Society
• Subjects: Magnetic nanoparticle; 1,8-Dioxo-octahydroxanthene; 14H-dibenzo[a,j]xanthenes; 12-Aryl-tetrahydrobenzo[a]xanthenes-11-one; 13-Aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraone; 2-Hydroxynaphthalene-1,4-dione
• Online Access: http://www.sciencedirect.com/science/article/pii/S1319610314000659

This report describes an efficient method for the synthesis of 1,8-dioxo-octahydroxanthene, 14H-dibenzo[a,j]xanthene, 12-aryl-tetrahydrobenzo[a]xanthenes-11-one and 13-aryl-5H-dibenzo[b,i]xanthene-5,7,12,14(13H)-tetraone derivatives in the presence of a catalytic amount of nano-iron oxide encapsulated silica particles bearing sulfonic acid groups. Results present an efficient, environmentally friendly and magnetically recoverable catalyst under solvent-free conditions at 110–130 °C.