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A convenient procedure for the synthesis of 14-aryl 14 H-dibenzo(a.j)xanthenes is reported using the condensation of β-naphthol with aryl and chromone aldehydes in the presence of dipyridine cobalt chloride as the catalys t under solvent-free conditions.

Dipyridine cobalt chloride: a novel and efficient catalyst for the synthesis of 14-aryl 14H-dibenzo[a.j]xanthenes under solvent-free conditions