Studies on the Biomimetic Oxidation Catalyzed by the Model Compound of Cytochrome P-450 (Ⅶ) The Influence of the Axial Ligand X in TPPFe(Ⅲ)X on Its Catalytic Properties for the Oxygenation of Cyclohexane

In the study of cyclohexane monoxygenation with PhIO catalyzed by TPPFe( Ⅲ )X, we found the Influence of different axial ionic ligands X (X = F, Cl, Br, I, SCN, OR, R, CH,3, C2H6, (CH3)2CH, (CH2)3C)in TPPFe( Ⅲ )X on the oxidation products distribution and the yields of cyclohexanol. This paper deals with the linear relationship between the catalytic activity of TPPFe(Ⅲ)X and both the electronic or/ and steric effects of the axial ligands OR in TPPFe(Ⅲ)OR on its catalytic activity.

各种金属卟啉催化环已烷的羟化作用

金属卟啉、分子氧、抗坏血酸和底物构成细胞色素P450摸拟体系,实现了在常温常压下环已烷选择氧化为环已醇和环已酮,产品环已醇和环已酮是与金属卟啉周围取代基的类型密切相关,研究了中心金属离子,轴向配体,底物和催化剂的比例,以及pH对反应的影响,最后提出了金属卟啉活化分子氧的反应机理.