A Deep cavitand receptor functionalized with Fe(II) and Mn(II) aminopyridine complexes for bioinspired oxidation catalysis
A deep cavitand receptor 2 based on a resorcinarene scaffold and functionalized with a bis(pyridyl)dipyrrolidine tetradentate ligand has been obtained. Binding of divalent metal ions (M2+ = Mn2+, Fe2+, and Zn2+) at the tetradentate ligand results in the formation of cavitand complexes 2·M(OTf)2. The...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2018 |
| País: | España |
| Institución: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repositorio: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:10256/15721 |
| Acceso en línea: | http://hdl.handle.net/10256/15721 |
| Access Level: | acceso abierto |
| Palabra clave: | Catàlisi Catalysis Química supramolecular Supramolecular chemistry Oxidació Oxidation |
| Sumario: | A deep cavitand receptor 2 based on a resorcinarene scaffold and functionalized with a bis(pyridyl)dipyrrolidine tetradentate ligand has been obtained. Binding of divalent metal ions (M2+ = Mn2+, Fe2+, and Zn2+) at the tetradentate ligand results in the formation of cavitand complexes 2·M(OTf)2. The complexes exhibit selective binding of alkylammonium ions and amides within the cavitand. 2·M(OTf)2 (M = Fe(II) and Mn(II)) catalyze selective hydroxylation of aliphatic C-H bonds and epoxidation of olefins with hydrogen peroxide, exhibiting selectivity patterns consistent with the implication of high valent metal-oxo species. Furthermore, 2·Fe(OTf)2 reacts with IO4- to form an oxoiron(IV) complex [2·Fe(O)]2+, without decomposition of the supramolecular container. This species is relatively stable at 0 °C, yet engages in fast oxygen-atom-transfer reactions |
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