Synthesis of Co(Ⅱ)2,2',4,4'-Tetrahydroxy Benzophenone Ethylenediamine Schiff Base Complexes and Investigation of Their Catalytic Asymmetric Oxidation of Thioethers
The asymmetric oxidation of thioethers catalyzed by chiral schiff base complexes is one of the most effective methods currently available.The article utilizes the reaction of 2,2',4,4'-tetrahydroxybenzophenone ethylenediamine to synthesize Schiff base ligands,and hydrothermal synthesis of complex(CoL1).The catalytic activity of this complex as a catalyst for the asymmetric oxidation of thioethers in the presence of bovine serum albumin was investigated.And the effects of reaction conditions such as buffer solution pH,oxidant concentration,substrate concentration,oxidant type,and reaction temperature on catalytic activity were investigated.The optimal reaction conditions for the asymmetric oxidation of phenyl methyl sulfide catalyzed by coL1 were obtained through single factor experiments.A conversion rate of 79.72%and a chemical selectivity of 99.13%were achieved,but the enantioselectivity was low(7.91%).
asymmetric oxidation of thioethersschiff base complexeschiral sulfoxidebovine serum albumin
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