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Zwitterionic Polymerization of Lactide to Cyclic Poly(Lactide) by Using N‐Heterocyclic Carbene Organocatalysts
Author(s) -
Culkin Darcy A.,
Jeong Wonhee,
Csihony Szilárd,
Gomez Enrique D.,
Balsara Nitash P.,
Hedrick James L.,
Waymouth Robert M.
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200604740
Subject(s) - lactide , polymerization , ring opening polymerization , dispersity , carbene , polymer chemistry , polymer , chemistry , materials science , catalysis , organic chemistry
Closing the loop : The zwitterionic ring‐opening polymerization of lactide in the presence of N‐heterocyclic carbenes generates well‐defined cyclic poly(lactide) (see scheme). The polymerization is rapid and produces macrocyclic polymers with high purity and exceptional control of molecular weight and polydispersity.