Under microwave irradiation conditions, ten Schiff bases 3a～3j have been synthesized. Firstly thiocarbazide was reacted with acetic acid to prepare 4,5-dihydro-3-methyl-4-amino-1,2,4-triazole-5-thione (1). Then compounds 1 reacted with [bi-(4-fluorophenyl)]methyl chloride in the presence of triethylamine and ethanol to form the key intermediate 2. The target compounds 3a～3j were synthesized by the condensation between substituted benzaldehyde and the intermediates 2 in acetic acid medium. The structures of target compounds have been confirmed by IR, ¹H NMR, MS techniques and elemental analysis.

Key words: 1,2,4-triazole Schiff bases, [bi-(4-fluorophenyl)]methyl chloride, organic synthesis, microwave irradiation