Tuning the conversion of cyclohexane into cyclohexanol/one by molecular dioxygen, protons and reducing agents at a single non-porphyrinic iron centre and chemical versatility of the tris(2-pyridylmethyl)amine TPAFe<sup>II</sup>Cl<sub>2</sub>complex in mild oxidation chemistry
作者:Hassen Jaafar、Bertrand Vileno、Aurore Thibon、Dominique Mandon
DOI:10.1039/c0dt00756k
日期:——
We report that the oxygen sensitivity of some Fe(II) complexes with tripodal ligands can be used, with benefit, in the oxidation of cyclohexane under mild conditions. Depending on the solvent, two very different reaction pathways are involved, which share the coordination of O2 to the metal as the common initial step. We have synthesized a series of α-chlorinated tripods in the tris(2-pyridylmethyl)amine
我们报告说,某些具有三脚架配体的Fe(II)配合物的氧敏感性可以有益地用于氧化环己烷在温和的条件下。取决于溶剂,涉及两个非常不同的反应路径,它们共同将O 2与金属的配位作为共同的初始步骤。我们合成了三(2-吡啶甲基甲基)胺系列Cl n TPA(n = 1-3)中的一系列α氯化三脚架,并充分表征了相应的FeX 2配合物(X = Cl,CF 3 SO 3)。报道了FeCl 2络合物的单晶X射线结构分析。在CH 3 CN中,FeCl 2络合物与O 2平稳反应,而Fe(CF 3 SO 3)2复合物是不敏感的。在CH 3 CN中,对氧敏感的Cl n TPAFeCl 2(n = 0-3)与O 2的反应,醋酸 和锌汞齐,在 环己烷,提供了 环己醇以≈ol / one的比值/3.1计/ 1,在金刚烷转化中C3°/ C2°的选择性与基于金属-氧代的氧化相一致。对于母体TPAFeCl 2络合物和Cl 1 TPAFeCl