Synthesis of 14‐Fluorophenyl‐14H‐Dibenzo[a,j]xanthenes and Their Derivatives under Microwave Irradiation and Solvent‐free Conditions

Abstract

A facile and efficient synthesis of 14-fluorophenyl-14H-dibenzo[a,j]xanthenes has been developed by one-pot condensation of fluorinated benzaldehydes with β-naphthol in the presence of p-TSA•H 2 O under microwave irradiation and solvent-free conditions. These products are conveniently oxidized to 14-fluorophenyl-14-hydroxydibenzo[a,j]xanthenes by PbO 2 in acetic acid in good yields.