Stereoselective polymerization of rac- and meso-lactide catalyzed by sterically encumbered N-heterocyclic carbenes.
New sterically encumbered N-heterocyclic carbene catalysts were synthesized and used to polymerize rac-lactide to give highly isotactic polylactide or meso-lactide to give heterotactic polylactide.
Dove
Andrew P
AP
IBM Almaden Research Center, 650 Harry Road, San Jose, CA 95120, USA.
Li
Hongbo
H
Pratt
Russell C
RC
Lohmeijer
Bas G G
BG
Culkin
Darcy A
DA
Waymouth
Robert M
RM
Hedrick
James L
JL
D002384:Catalysis; D006838:Hydrocarbons / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry; D011091:Polyesters / Q000138:chemical synthesis*; D013237:Stereoisomerism
D006838:Hydrocarbons; D011091:Polyesters; C030011:carbene; C033616:poly(lactide); D008697:Methane