SILICA SULFURIC ACID: A SIMPLE, EFFICIENT, AND REUSABLE HETEROGENEOUS CATALYST FOR THE ONE-POT SYNTHESIS OF ARYL-14H-DIBENZO[<i>a</i>,j<i>]</i>XANTHENES UNDER CONVENTIONAL HEATING AND SOLVENT-FREE CONDITIONS

Abstract

A novel approach towards the one-pot synthesis of aryl-14H-dibenzo[a,j]xanthenes is described from a known reaction between substituted aldehydes and β-naphthol in the presence of heterogeneous catalyst silica sulfuric acid under conventional heating as well as solvent-free conditions to afford good to excellent yields. The catalyst is reusable; it can be used several times without any decrease in the product yield.

How to Cite
Hunnur, R. K.; Sunilkumar, B.; Kumar, P. S.; Srinivasulu, N.;
Udupi, R. H.; Hima bindu, V.  Chem. Heterocycl. Compd. 2008, 44, 143. [Khim. Geterotsikl. Soedin. 2008, 196.]

For this article in the English edition see DOI 10.1007/s10593-008-0035-3