Melamine trisulfonic acid as a highly efficient catalyst for the synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions

Melamine trisulfonic acid (MTSA) is utilized as a highly efficient catalyst for the solvent-free condensation of 2-naphthol with arylaldehydes under conventional thermal or microwave irradiation to give 14-aryl-14H-dibenzo[a,j]xanthenes in high to excellent yields and in short reaction times.

Keywords:

14-Aryl-14H-dibenzo[a , j]xanthene , melamine trisulfonic acid (MTSA) , 2-naphtol , arylaldehyde , solvent-free , microwave