过渡金属卟啉催化分子氧氧化环己烯性能研究

Catalyzed Oxidation of Cyclohexene with Molecular Oxygen by Transition Metalloprophyrin

研究了meso-四(对羟基苯基)卟啉过渡金属配合物(THPPM,M=CoⅡ,MnⅡ)催化分子氧氧化环己烯的反应。结果表明,在反应温度为70℃时,THPPCoⅡ催化分子氧氧化环己烯的转化率达到90%,产物主要是2-环己烯-1-酮(70%)和2-环己烯-1-醇(26%),并考察了反应温度、时间及加入吡啶对环己烯转化率和产物选择性的影响,探讨了THPPCoⅡ催化分子氧氧化反应机理。

The oxidation of cyclohexene with molecular oxygen catalyzed by meso-tetra （ hydroxyphenyl） porphyrin transition metal complexes （THPPM,M = CoⅡ ,MnⅡ ） was studied. The results shown that the main products were 2-cyclohexenol （26%） and 2-cyclohexenone （70% ） at 70℃ with the conversion of cyclohexene 90% by THPPCoⅡ catalyst. Moreover,the influences of reaction temperature,reaction time and adding pyridine in reaction system on the conversion and selectivity of cyclohexene were discussed. Possible mechanism for catalytic oxidation of cyclohexene with molecular oxygen was proposed.