【摘要】 报道了钴卟啉催化下PhIO对环己烷的单充氧反应及其反应动力学行为。探讨了反应温度和有机配体对该反应的影响。研究结果表明:在配体吡啶的作用下,钴卟啉对PhIO单充氧化环己烷具有催化活性,其催化性能与反应温度以及吡啶用量有关。反应速率随温度增加而增加,且表观反应速率常数与反应温度之间存在Arrhenius关系。反应产率随温度升高而降低。当吡啶与TPPCo(Ⅱ)用量为50:1时,TPPCo(Ⅱ)催化效果最好。更多还原

【Abstract】 This paper reports the catalysis of TPPCo(Ⅱ) for cyclohexane monooxygenation with PhIO. The kinetic properties, the temperature effect and the effect of axial ligands of the reactions were studied. The results show that TPPCo(Ⅱ) with axial ligand pyridine can catalyze cyclohexane monooxygenation with PhIO and that the catalytic properties are related to the reaction temperature and the quantity of pyridine. The rates of the reactions can increase with the increase of the reaction temperature. There is Arrhenius relationship between the rate constants of the reactions and the reaction temperature. The yields of the products decrease with the increase of the reaction temperature. The catalytic effect of TPPCo(Ⅱ) is the best when the quantity of pyridine is 50 times that of TPPCo(Ⅱ).更多还原