2026-04-14T02:07:56Zhttps://recercat.cat/oai/request

oai:recercat.cat:10256/117262024-06-18T13:50:35Zcom_2072_452955com_2072_2054col_2072_453073

2024-06-18T13:50:35Z urn:hdl:10256/11726 Ru (II) complexes containing dmso and pyrazolyl ligands as catalysts for nitrile hydration in environmentally friendly media Ferrer Vall-llosada, Íngrid Rich Masallera, Jordi Fontrodona, Xavier Rodríguez Pizarro, Montserrat Romero García, Isabel Ruteni -- Compostos Ruthenium compounds Catàlisi Catalysis Hidròlisi Hydrolysis The synthesis of two Ru-dmso complexes containing the ligands 2-(3-pyrazolyl)pyridine (pypz-H), and pyrazole (pz-H), [RuIICl 2(pypz-H)(dmso)2], (2) and [RuIICl 2(pz-H)(dmso)3], (3), has been described. Both complexes have been fully characterized in solution through 1H-NMR and UV-Vis techniques and also in the solid state through monocrystal X-ray diffraction analysis. The redox properties of both complexes have also been studied by means of cyclic voltammetry. Exposure of 2 to visible light in acetonitrile produces a substitution of one dmso ligand by a solvent molecule generating a new complex, [RuIICl2(MeCN)(pypz-H)(dmso)] (4). Also, UV-visible spectroscopy points out that complex 2 presents a thermal and photochemical substitution of dmso ligands in aqueous solution. Finally, the reactivity of complexes 2 and 3 has been tested with regard to the hydration of nitriles using water as a single solvent, displaying good efficiency and selectivity for the corresponding amide derivatives. In general, better performance is achieved with complex 3. Reuse of these catalysts in water and glycerol has been explored for the first time in ruthenium-mediated nitrile hydration catalysis This research has been financed by MICINN of Spain (CTQ2010-21532-C02-01) 2024-06-18T13:50:35Z 2024-06-18T13:50:35Z info:eu-repo/date/embargoEnd/2026-01-01 info:eu-repo/date/embargoEnd/2026-01-01 2013-10-07 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/10256/11726 info:eu-repo/semantics/altIdentifier/doi/10.1039/C3DT51580J info:eu-repo/semantics/altIdentifier/issn/1477-9226 info:eu-repo/semantics/altIdentifier/eissn/1477-9234 info:eu-repo/grantAgreement/MICINN//CTQ2010-21532-C02-01/ES/MIMETIZACION DE PROCESOS BIOINORGANICOS Y APLICACIONES CATALITICAS CON COMPUESTOS DE METALES DE TRANSICION./ Tots els drets reservats info:eu-repo/semantics/embargoedAccess Royal Society of Chemistry (RSC) © Dalton Transactions, 2013, vol. 42, núm. 37, p. 13461-13469 Articles publicats (D-Q)