Synthesis and Catalysed Cyclohexene Epoxidation of Three Schiff Base Molybdenums
In order to investigate the performance of molybdenum complexes in the catalytic epoxidation of cyclohexene,three Schiff base molybdenum complexes with different electronic effects were synthesised and characterised by a range of analytical techniques,including infrared spectroscopy,UV-visible spectroscopy,X-ray single-crystal diffraction and thermogravimetric analysis.The cyclohexene epoxidation reaction was conducted using a Schiff base molybdenum complex(L1)2-Mo as the catalyst and hydrogen peroxide as the oxidant.Under optimal conditions,the reaction yielded 81.75％conversion and 94.25％selectivity.The experimental results demonstrated that the incorporation of electron-pushing groups into the Schiff base molybdenum complexes could enhance the catalyst activity.
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