A simple and highly efficient procedure has been described for the synthesis of 9-aryl-6-(2- naphthyl)[1,2,4]triazolo[4,3-a][1,8]naphthyridines 8 by the oxidation of the corresponding aryl aldehyde1-[3-(2-naphthyl) [1,8]naphthyridin-2-yl]hydrazones 7 using silica gel supported ferric chloride in solvent-free conditions under microwave irradiation. The products are obtained in very good yields and in a state of high purity. The structure of compounds 3-8 were confirmed by their specral studies.