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Journal articles
Yttrium phosphasalen initiators for rac-lactide polymerization: Excellent rates and high iso-selectivities
Abstract : Highly active yttrium phosphasalen initiators for the stereocontrolled ring-opening polymerization of rac-lactide are reported. The initiators are coordinated by a new class of ancillary ligand: an iminophosphorane derivative of the popular "salen" ligand, termed "phosphasalen". Changing the phosphasalen structure enables access to high iso-selectivities (Pi = 0.84) or hetero-selectivities (Ps = 0.87). The initiators also show very high rates, excellent polymerization control, and tolerance to low loadings; furthermore, no chiral auxiliaries/ligands are needed for the stereocontrol. The combination of such high rates with high iso-selectivities is very unusual.
https://hal-polytechnique.archives-ouvertes.fr/hal-00906007
Contributor : Francoise Girard Connect in order to contact the contributor
Submitted on : Tuesday, November 19, 2013 - 10:13:31 AM
Last modification on : Friday, February 4, 2022 - 9:02:01 AM
Contributor : Francoise Girard Connect in order to contact the contributor
Submitted on : Tuesday, November 19, 2013 - 10:13:31 AM
Last modification on : Friday, February 4, 2022 - 9:02:01 AM