A new synthetic method featuring using 5-sulfosalicylic acid as catalyst to prepare nine titanocene derivatives is reported. The title complexes were characterized by elemental anlysis, UV-vis, IR and ^1H NMR spectroscopy.Based on the UV-vis spectrum, the mechanism of synthetic complexes is proposed as follows: first, Cp2TiCl2 in the organic phase reacts interfacially with 5-sulfosalicylic acid in the aqueous phase to form an intermediate, The resulting specices undergoes an interfacial interaction with substituted salicylic acid to form the final complexes, which stay in the organic phase.Then the 'Cp2Ti' species return to the organic phase while 5-sulfosalicylic acid remains in the water phase.

Key words: SALICYLIC ACID P, ELEMENTAL ANALYSIS, ULTRAVIOLET SPECTROPHOTOMETRY, PROTON MAGNETIC RESONANCE SPECTROMETRY, STRUCTURE CHARACTERISTICS, REACTION MECHANISM