Zirconium dodecylphosphonate promoted synthesis of xanthene derivatives by condensation reaction of aldehydes and beta-naphthol or dimedone in green media

摘要

A green and safe method for the synthesis of variety of xanthene derivatives by condensation reaction between aldehydes and beta-naphthol or dimedone in an alcoholic solution is described. Cheap and environmentally benign reaction media, simple work-up, mild reaction conditions, recovery of catalyst, and excellent yields are the main advantages of this procedure. On the other hand, the acyclic producing intermediates are important ligands for the synthesis of organometallic compounds.