Synthesis and structural chemistry of arene-ruthenium half-sandwich complexes bearing an oxazolinyl-carbene ligand.
Fiche publication
Date publication
juin 2006
Auteurs
Membres identifiés du Cancéropôle Est :
Dr BELLEMIN-LAPONNAZ Stéphane
Tous les auteurs :
Poyatos M, Maisse-Francois A, Bellemin-Laponnaz S, Peris E, Gade LH
Lien Pubmed
Résumé
Reaction of a series of directly connected oxazoline-imidazolium salts with silver(l) oxide and subsequent transmetallation with [Ru(p-cymene)Cl-2](2) and anion exchange with KPF6 cleanly gave the corresponding 2-oxazolinyl-(N-mesityl)imidazolidene(chloro)ruthenium(II) half-sandwich complexes [RuCl(oxcarb)(p-cymene)]PF6, two derivatives of which were characterized by X-ray diffraction. Abstraction of the chloro ligand furnished the dicationic aqua complexes [Ru(H2O)(oxcarb)(p-cymene)](PF6)(2) which possess a similar coordination geometry. The syntheses were found to be highly diastereoselective, since only one diastereoisomer could be observed in all ruthenium complexes upon reaction of the chiral enantiopure oxazoline-imidazolium salts. Their potential as transfer hydrogenation and Lewis acid catalysts has been probed. (c) 2006 Elsevier B.V. All rights reserved.
Référence
. 2006 Jun 1;691(12):2713-20.