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Título

A New Perfluorinated F21-Tp Scorpionate Ligand: Enhanced Alkane Functionalization by Carbene Insertion with (F21-Tp)M Catalysts (M = Cu, Ag)

AutorDespagnet-Ayoub, Emmanuelle; Jacob, Kane; Vendier, Laure; Etienne, Michel; Álvarez, Eleuterio CSIC ORCID ; Caballero, Ana; Díaz-Requejo, M. Mar; Pérez, Pedro J. CSIC ORCID
Palabras clavePerfluorinated
Alkanes
Carbenes
X-ray
Silver
Metal complexes
Fecha de publicación20-ago-2008
EditorAmerican Chemical Society
CitaciónOrganometallics 27(18): 4779-4787 (2008)
ResumenThe new tris(indazolyl)borate ligand [F21-Tp4Bo,3CF3]Tl (1) has been prepared and structurally characterized. The reaction of its thalium salt with copper iodide or silver triflate afforded the complexes [F21-Tp4Bo,3CF3]ML (M = Cu, L = NCMe, 2; M = Ag, L = Me2CO, 4), from which the carbonyl adducts [F21-Tp4Bo,3CF3]M(CO) (M = Cu, 3; M = Ag, 5) have also been obtained. Complexes 2−5 have been characterized by spectroscopic and X-ray studies, from which the existence of electron-deficient metal centers could be envisaged. Complexes 2 and 4 have been employed as catalysts for the reaction of alkanes and cycloalkanes with ethyl diazoacetate. The silver complex displays excellent catalytic activity for the insertion of the carbene into the alkane CH bonds. Functionalized products are obtained in high yield (>90%) with low catalyst loadings (0.5%). TON values of 200 have been reached, 10 times higher than any other group 11 metal-based catalyst already reported for this transformation.
Descripción9 páginas, 3 figuras, 2 tablas, 6 esquemas.
Versión del editorhttp://dx.doi.org/10.1021/om800531a
URIhttp://hdl.handle.net/10261/37719
DOI10.1021/om800531a
ISSN0276-7333
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