HClO4–SiO2-catalyzed synthesis of 12-aryl-12H-benzo[i][1,3]dioxolo[4,5-b]xanthene-6,11-diones and 10-aryl-6,7,8,10-tetrahydro-7,7-dimethyl-9H-[1,3]dioxolo[4,5-b]xanthen-9-ones

• DOI: 10.1007/s00706-010-0333-1
• Publication Date: 2010-06-15T04:39:22Z
• Authors: Liqiang Wu; Yanfang Wu; Fulin Yan; Lizhen Fang
• Keywords: Dimedone; Xanthene; Component (thermodynamics)

AbstractA simple, efficient, and green method for the synthesis of the title compounds (IV) and (VII), resp., is developed using HClO4‐SiO2 as catalyst in appropriate three‐component reactions under solvent‐free conditions.