Repository landing page

We are not able to resolve this OAI Identifier to the repository landing page. If you are the repository manager for this record, please head to the Dashboard and adjust the settings.

Yttrium Phosphasalen Initiators for <i>rac</i>-Lactide Polymerization: Excellent Rates and High Iso-Selectivities

Abstract

Highly active yttrium phosphasalen initiators for the stereocontrolled ring-opening polymerization of <i>rac</i>-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 (<i>P</i><sub>i</sub> = 0.84) or hetero-selectivities (<i>P</i><sub>s</sub> = 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

Similar works

Full text

thumbnail-image

The Francis Crick Institute

redirect
Last time updated on 12/02/2018

This paper was published in The Francis Crick Institute.

Having an issue?

Is data on this page outdated, violates copyrights or anything else? Report the problem now and we will take corresponding actions after reviewing your request.