Alkene epoxidation catalysed by ligand-bound supported metalloporphyrins

Approaches to the synthesis of heterogenised metalloporphyrins

“…Much effort has been made to attach metalloporphyrins to solids, namely, adsorption, [9] electrostatic binding, [10] entrapment, [11] polymerisation, [12,13] covalent binding [14][15][16] or axial ligation of metal, [17] but most of them suffer from a reversible binding under work conditions, specially in polar solvents like water or methanol [8], or a fairly low porphyrin contents onto the solid matrix (≈0.02 mmol g −1 ).…”

A cooperative effect between support and the heterogenised metalloporphyrins on electrocatalytic oxygen reduction

“…A useful means to avoid these limitations is by heterogenisation of these transition metal complexes onto robust inorganic supports, due to the stable covalent binding established between catalyst and support and the demonstrated increased stability of the metallic complexes after supporting. Different methods have been used to heterogenise metalloporphyrins, namely, electrostatic binding [2], entrapment [3], polymerisation [4], covalent binding [5] or axial ligation of metal [6], but most of them suffer from a reversible binding under working conditions [2,6] or a fairly low porphyrin contents onto the solid matrix(%0.02 mmol/g) [5]. In order to achieve a stable binding between ligand and support and increased loading of metallic complex we have developed a simple way to synthesise heterogenised porphyrins and metalloporphyrins.…”

Anchored ironporphyrins?the role of talc-aminofunctionalyzed phyllosilicates in the catalysis of oxidation of alkanes and alkenes

“…Percentage yield (based on PhIO after 24 h) of cyclohexanol generated from the oxidation of cyclohexane by iodosylbenzene catalyzed by homogeneous (FeP) and supported FeTFPP. similar heterogeneous systems described in the literature [12,15,22,37]. Cyclohexane hydroxylation was the only reaction that took place.…”