单取代苯丙氨酸四苯基卟啉锰(Ⅲ)催化烯烃环氧化反应研究

Studies on Alkenes Epoxidation Catalyzed by Monosubstituted Phenylalanine Tetraphenylporphyrinatomanganese (Ⅲ)

研究单取代苯丙氨酸四苯基卟啉锰（简记为MnLphcCl）与锌粉（Zn）、乙酸（CH3COOH）和咪唆（Im）组成的氧化模拟体系催化烯烃环氧化反应的吸氧动力学曲线和不同助催化剂对体系催化活性的影响，结果表明，该体系催化四种烯烃环氧化产物收率（Zn％）由高到低的顺序为：环已烯＞1-癸烯＞丙烯酸甲酯＞烯丙基丙酮，用吡啶（Py）代替咪唑(Im)可明显提高体系的吸氧速度．

The oxyen uptake dynamical cure of oxidation mimetic system for epoxidation ofalkenes by dioxgen using MnLphe Cl, Zn, CH3COOH and Im is measured. The effect of cocatalysts onthe catalytic activity of the system is studied. The results show that the epoxidation yields(Zn% ) ofthe system diminish as follOws: cyclohexene, 1- decene, methyl acrylate and allylaceton and the uptake oxygen rate will be increased by substituting pyridine for imidazole.