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An unprecedented phosphinamidic gold(iii) metallocycle: Synthesis via tin(iv) precursors, structure, and multicomponent catalysis

dc.contributor.authorOña Burgos, Pascual
dc.contributor.authorFernández de las Nieves, Ignacio
dc.contributor.authorRoces Fernández, Laura 
dc.contributor.authorTorre Fernández, Laura 
dc.contributor.authorGarcía-Granda, Santiago 
dc.contributor.authorLópez Ortiz, Fernando
dc.date.accessioned2013-01-30T10:01:28Z
dc.date.available2013-01-30T10:01:28Z
dc.date.issued2009
dc.identifier.citationOrganometallics, 28(6), p. 1739-1747 (2009); doi:10.1021/om801137yspa
dc.identifier.issn0276-7333
dc.identifier.urihttp://hdl.handle.net/10651/7115
dc.description.abstractA straightforward method of synthesizing cycloaurated gold(III) phosphinamide-based molecules starting from their ortho-tin(IV) derivatives in excellent yields is described. The structure of the tin and gold complexes has been investigated by multinuclear magnetic resonance (1H, 13C, 15N,31P, 119Sn) and single-crystal X-ray diffraction. In solution and in the solid state the ortho-functionalized phosphinamide moiety acts as a new C−C−P−O pincer ligand with formation of asymmetric five-membered ring metallocycles. Intramolecular PO coordination to tin(IV) leads to a distorted trigonal-bipyramid configuration for the metal, while in the gold(III) metallocyclic complex the metal shows a square-planar geometry. The new Au(III) complex has been applied in multicomponent (A3) coupling processes, providing a variety of propargylamines in quantitative yields under very mild conditions without the use of any activator or additive. Diffusion NMR studies showed that the catalyst is present as a monomer in acetonitrile solution, while a slight charge-induced aggregation seems to take place in chloroform.spa
dc.format.extentp. 1739-1747spa
dc.language.isoeng
dc.relation.ispartofOrganometallicsspa
dc.rights(c) American Chemical Society
dc.sourceSCOPUSspa
dc.source.urihttp://www.scopus.com/inward/record.url?eid=2-s2.0-64649101161&partnerID=40
dc.titleAn unprecedented phosphinamidic gold(iii) metallocycle: Synthesis via tin(iv) precursors, structure, and multicomponent catalysiseng
dc.typeinfo:eu-repo/semantics/article
dc.identifier.local20090704spa
dc.identifier.doi10.1021/om801137y
dc.type.dcmitextspa
dc.relation.publisherversionhttp://dx.doi.org/10.1021/om801137yspa


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