dc.creatorMartín García, Iris
dc.creatorDíaz Reyes, Gloria
dc.creatorSloan, George
dc.creatorMoglie, Yanina Fernanda
dc.creatorAlonso, Francisco
dc.date.accessioned2022-08-29T12:55:05Z
dc.date.accessioned2022-10-15T12:49:09Z
dc.date.available2022-08-29T12:55:05Z
dc.date.available2022-10-15T12:49:09Z
dc.date.created2022-08-29T12:55:05Z
dc.date.issued2021-05
dc.identifierMartín García, Iris; Díaz Reyes, Gloria; Sloan, George; Moglie, Yanina Fernanda; Alonso, Francisco; Sulfur-stabilised copper nanoparticles for the aerobic oxidation of amines to imines under ambient conditions; Royal Society of Chemistry; Journal of Materials Chemistry A; 9; 18; 5-2021; 11312-11322
dc.identifier2050-7488
dc.identifierhttp://hdl.handle.net/11336/166792
dc.identifier2050-7496
dc.identifierCONICET Digital
dc.identifierCONICET
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/4387935
dc.description.abstractThe stabilisation of metal nanoparticles and control of their oxidation state are crucial factors in nanocatalysis. Elemental sulfur has been found to be a cheap and effective stabilising agent for copper nanoparticles in the form of copper(i) oxide. The Cu2ONPs/S8 system has been characterised by ICP-OES, EDX, XRD, XPS, FE-SEM, SEM, TEM and Cryo-EM. Astonishingly, in organic medium, the copper nanoparticles are organised as concentric rings within nanodroplets of sulfur of ca. 20-70 nm. In synthetic organic chemistry, imines can be directly obtained by the less studied and practiced oxidation of primary amines; however, the reaction conditions utilised are usually harsh and far from meeting the principles of Green Chemistry. Cu2ONPs/S8 has been successfully applied to the solvent-free aerobic oxidation of primary amines to imines under ambient conditions, using air as a terminal oxidant. The catalyst is effective in the homo- and heterocoupling of benzylic amines at very low copper loading (0.3 mol%), being catalytically superior to a range of commercial copper catalysts. A reaction mechanism has been proposed based on experimental evidence, which clarifies the major uncertainty regarding the key intermediate. The results of this study suggest a number of new avenues for research in nanocatalysis.
dc.languageeng
dc.publisherRoyal Society of Chemistry
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1039/d0ta12621g
dc.relationinfo:eu-repo/semantics/altIdentifier/url/https://pubs.rsc.org/en/content/articlelanding/2021/TA/D0TA12621G
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectCOOPER NANOPARTICLES
dc.subjectSULFUR
dc.subjectAEROBIC OXIDATION
dc.subjectIMINES
dc.titleSulfur-stabilised copper nanoparticles for the aerobic oxidation of amines to imines under ambient conditions
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


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