One-pot synthesis of aryl 14H-dibenzo[a,j]xanthene leuco-dye derivatives

A novel, efficient, one-pot, and solvent-free method for the preparation of aryl 14H-dibenzo[a,j]xanthene leuco-dye derivatives by condensation of 2-naphthol and substituted benzaldehydes is reported under thermal conditions. This method has the advantages of high yields, a cleaner reaction, simple methodology, convenient reaction times, easy workup and greener conditions.