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dc.contributor.authorGonzález Soengas, Raquel María
dc.contributor.authorNavarro García, Yolanda
dc.contributor.authorIglesias Valdés-Solís, María José
dc.contributor.authorLópez Ortiz, Fernando
dc.date.accessioned2020-01-17T09:37:43Z
dc.date.available2020-01-17T09:37:43Z
dc.date.issued2018-11-14
dc.identifier.issn1420-3049
dc.identifier.urihttp://hdl.handle.net/10835/7531
dc.description.abstractA cycloaurated phosphinothioic amide gold(III) complex was supported on amorphous silica with the aid of an imidazolium ionic liquid (IL) physisorbed in the SiO2 pores (SiO2–IL) and covalently bonded to the SiO2 (SiO2@IL). Gold(0) nanoparticles (AuNPs) were formed in situ and subsequently immobilized on the SiO2–IL/SiO2@IL phase. The resulting catalytic systems Au–SiO2–IL and Au–SiO2@IL promoted the solvent-free A3 coupling reaction of alkynes, aldehydes, and amines in high yields under solvent-free conditions with very low catalyst loading and without the use of additives. The Au–SiO2@IL catalyst showed good recyclability and could be reused at least five times with yields of propargylamines of ≥80%. This synthetic method provides a green and low cost way to effectively prepare propargylamines. Additionally, 31P high resolution magic angle spinning (HRMAS) NMR spectroscopy is introduced as a simple technique to establish the Au loading of the catalyst.es_ES
dc.language.isoenes_ES
dc.publisherMDPIes_ES
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectgoldes_ES
dc.subjectnanoparticleses_ES
dc.subjectmulticomponent reactiones_ES
dc.subjectsupported catalystes_ES
dc.subjectpropargylaminees_ES
dc.subjectHRMASes_ES
dc.titleImmobilized Gold Nanoparticles Prepared from Gold(III)-Containing Ionic Liquids on Silica: Application to the Sustainable Synthesis of Propargylamineses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://www.mdpi.com/1420-3049/23/11/2975es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES


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Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internacional