Ring-Opening Polymerization of L-Lactide Efficiently Triggered by an Amido-Indole. X-ray Structure of a Complex between L-Lactide and the Hydrogen-Bonding Organocatalyst
DEFFIEUX, Alain
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Voir plus >
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
DEFFIEUX, Alain
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
Laboratoire de Chimie des Polymères Organiques [LCPO]
Team 1 LCPO : Polymerization Catalyses & Engineering
PERUCH, Frédéric
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
Journal of the American Chemical Society. 2009, vol. 131, n° 42, p. 15088-15130
American Chemical Society
Résumé en anglais
N-(3,5-Bis(trifluoromethyl)phenyl)-1H-indole-2-carboxamide le is an efficient hydrogen-bonding organocatalyst for the ring-opening polymerization Of L-lactide. This new catalytic species does control the dispersity (1.08) ...Lire la suite >
N-(3,5-Bis(trifluoromethyl)phenyl)-1H-indole-2-carboxamide le is an efficient hydrogen-bonding organocatalyst for the ring-opening polymerization Of L-lactide. This new catalytic species does control the dispersity (1.08) and molecular weight (3460 g/mol vs 3064 in theory) of the poly(L-lactides) prepared in 2 h. H-1 NMR analysis showed that compound le complexes L-lactide in CDCl3 through the two available NH groups (amide and indole). In particular, the catalytic species appeared to be mainly the H-bonding donor amide (le in extended conformation, alone or dimer (1e)(2)) and, to a Lesser extend, the dual H-bonding amido-indole (1e in its the pinched conformation). The first X-ray structure of the complex between a H-bonding organocatalyst and L-lactide also revealed a tight H-bonded network between the dimer (1e)(2) and L-lactide.< Réduire
Mots clés en anglais
LIVING POLYMERIZATION
DONORS
DERIVATIVES
CATALYSTS
RECOGNITION
Origine
Importé de halUnités de recherche