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Published:
Oct 14, 2015Keywords:
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FeCl<sub>3</sub>.nano SiO<sub>2</sub>: An Efficient Heterogeneous Nano Catalyst for the Synthesis of 14-Aryl-14<i>H</i>-dibenzo[a,j]xanthenes and 1,8-Dioxo-octahydro-xanthenes under Solvent-free Conditions
Abstract
A novel, efficient and eco-friendly procedure for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes and 1,8-dioxo-octahydroxanthenes is described through one-pot condensation of 2-naphthol and dimedone with aryl aldehydes in the presence of nano silica-supported ferric chloride under solvent-free conditions. The present approach offers several advantages such as short reaction times, high yields, easy purification, recovery and reusability of the catalyst.
Keywords: Xanthenes, nano silica, ferric chloride, multi-component reactions, solvent-free
