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Abstract This work has been carried out to investigate the catalytic activity of some Schiff Base complexes in cyclopropanation of non-activated olefins. Ten new Schiff base ligands were prepared (three diamines and seven thiosemicarbazones) and Characterized by elemental analyses and spectral studies (IR, NMR, UV and mass spectroscopy). One of the prepared diamine ligands was optically active. Moreover, some transition metal complexes of these ligands were prepared by the reaction of the transition metal ions with these new ligands, and characterized by elemental analyses, spectrophotometric studies (IR, NMR, ESR and UV-Vis.), molar conductivity and magnetic moment determinations beside ESR measurements to enable the elucidation of the geometrical structure of the prepared metal complexes. The results came with good agreement with the proposed structures. Some of the prepared copper and cobalt complexes were investigated for their catalytic activity in cyclopropanation of non-activated olefins and some of them showed an excellent reactivity with a moderate to excellent selectivity. Five of the examined copper complexes can be used as catalysts in industry. Key words: Diamine, Schiff bases, thiosemicarbazide, metal Complexes, Characterization, Catalytic activity, Chiral catalyst, cyclopropanation reactions, homogeneous catalysis, condensation reactions. |