Step-growth Polymerization of Terephtaldehyde Catalyzed by N-Heterocyclic Carbenes
TATON, Daniel
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
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Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
TATON, Daniel
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
< Réduire
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Langue
en
Article de revue
Ce document a été publié dans
International Journal of Biological Macromolecules. 2009, vol. 42, n° 14, p. 4932-4936
Elsevier
Résumé en anglais
Benzoin condensation consists in reacting two aldehyde functions through a resonance-stabilized enaminol-type intermediate called the Breslow intermediate. This communication describes for the first time the use of ...Lire la suite >
Benzoin condensation consists in reacting two aldehyde functions through a resonance-stabilized enaminol-type intermediate called the Breslow intermediate. This communication describes for the first time the use of N-heterocyclic carbenes (NHCs) as organic catalysts for the step-growth polymerization of a bis-aldehyde monomer, namely terephtaldehyde, which leads to poly(l,4-phenylene-l-oxo-2-hydroxyethylene) referred to as polybenzoin. These NHC-catalyzed polymerizations presumably involve the formation of Breslow intermediates. The effect of the NHCs catalyst activity and of the solvent polarity on the kinetics of the polymerization and on the formation of linear and cyclic polybenzoins is discussed.< Réduire
Mots clés en anglais
N-heterocyclic carbine
benzoin condensation
step-growth polymerization
Breslow intermediate
organocatalysis
Origine
Importé de halUnités de recherche