A facile, efficient and environment-friendly protocol for the synthesis of 14-aryl-14H-dibenzo[ a,j]xanthenes has been
developed by one-pot condensation of 2-naphthol with aromatic aldehydes in the presence of guanidinium chloride as a
novel organocatalyst under solvent-free conditions. The present approach offers the advantages such as clean reaction,
shorter reaction times, excellent product yields, simple reaction and work-up procedure, economic availability of the
organocatalyst and purification of products by non-chromatographic methods.
