Combining NHC bis-phenolate ligands with oxophilic metal centers: a powerful approach for the development of robust and highly effective organometallic catalysts.
Fiche publication
Date publication
janvier 2014
Auteurs
Membres identifiés du Cancéropôle Est :
Dr BELLEMIN-LAPONNAZ Stéphane
Tous les auteurs :
Bellemin-Laponnaz S, Dagorne S, Dumpelmann R, Steffanut P
Lien Pubmed
Résumé
The present paper describes an overview of a novel family of tridentate NHC pincer ligand in which two phenoxide moieties are directly connected to the nitrogen atoms of a central N-heterocyclic carbene. It was envisioned that such a structure might be suitable for coordination to a variety of metal centers across the periodic table, including oxophilic metals. Various metal complexes bearing such ligand are indeed readily accessible in high yields via straightforward routes. Interestingly, a robust zirconium-NHC complex was found to polymerize rac-lactide in a highly controlled, living and stereoselective manner to afford heterotactic PLA.
Référence
Chimia (Aarau). 2014;68(7-8):500-4