Dicationic and zwitterionic catalysts for the amine-initiated, immortal ring-opening polymerisation of rac-lactide: facile synthesis of amine-terminated, highly heterotactic PLA.
Dicationic, zwitterionic and "conventional" yttrium compounds act as catalysts for the primary or secondary amine-initiated immortal ROP of rac-lactide; amine-terminated, highly heterotactic poly(rac-lactides) with narrow polydispersities and well-controlled molecular weights are prepared in this manner.
Clark
Lawrence
L
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, UK OX1 3TA.
Cushion
Michael G
MG
Dyer
Hellen E
HE
Schwarz
Andrew D
AD
Duchateau
Robbert
R
Mountford
Philip
P
D000588:Amines / Q000737:chemistry*; D002384:Catalysis; D002412:Cations / Q000737:chemistry*; D004146:Dioxanes / Q000737:chemistry*; D008968:Molecular Conformation; D011091:Polyesters / Q000138:chemical synthesis* / Q000737:chemistry; D015019:Yttrium / Q000737:chemistry
D000588:Amines; D002412:Cations; D004146:Dioxanes; D011091:Polyesters; C033616:poly(lactide); D015019:Yttrium; C091880:dilactide