Guanidinium Chloride: A Novel and Efficient Organocatalyst for the Synthesis of 14-Aryl-14H-dibenzo[a,j]xanthenes under Solvent-Free Conditions

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 guanidiniumchloride as a novel organocatalyst under solvent-free conditions. The present approach offers the advantages such asclean 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

Keywords:

Xanthene , guanidinium chloride , naphthol , aldehyde