Article

Silica sulfuric acid: A simple, efficient, and reusable heterogeneous catalyst for the one-pot synthesis of aryl-14H-dibenzo[a,j]xanthenes under conventional heating and solvent-free conditions

Chemistry of Heterocyclic Compounds (impact factor: 0.73). 04/2012; 44(2):143-147. DOI:10.1007/s10593-008-0035-3 pp.143-147

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.

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Keywords

excellent yields
 
heterogeneous catalyst silica sulfuric acid
 
one-pot synthesis
 
product yield
 
solvent-free conditions
 
β-naphthol
 

Raveendra K. Hunnur