1419286-10-4Relevant articles and documents
Ring-opening polymerization of l-lactide catalyzed by calcium complexes
Hsiao, Mon-Wei,Lin, Chu-Chieh
, p. 2041 - 2051 (2013)
A series of calcium complexes supported by NNO-tridentate ketiminate ligands have been synthesized and characterized. X-ray structural studies indicate that these complexes bear a mononuclear feature with hexa-coordinated calcium centers bonding to two ketiminate ligands. Polymerization of l-lactide catalyzed by these complexes proceeds rapidly and well controlled in the presence of a variety of alcohols. In addition, these complexes reveal good catalytic activity even with the addition of up to 80 equiv. of benzyl alcohol as a transfer agent. Furthermore, kinetic studies show ROP of l-lactide is a first-order dependency on [LA] and a second-order dependency on [BnOH]. The Royal Society of Chemistry 2013.