Controlled ring-opening polymerization of lactide by bis-sulfonamide/ amine associations: Cooperative hydrogen bonding catalysis
The bis-sulfonamide m-C6H4(SO2NHPh) 2 efficiently promotes the ring-opening polymerization of lactide when combined with tertiary amines, such as N,N-dimethylamino-pyridine. Polylactides of controlled molecular weights (Mn up to 17,700 g moT-1) and very narrow molecular weight distributions (M w/Mn 2NHAr) moieties.