Development of Amino-Oxazoline and Amino-Thiazoline Organic Catalysts for the Ring-Opening Polymerisation of Lactide

被引：30

作者：

Becker, Jan M. ^{[1
]}

Tempelaar, Sarah ^{[1
]}

Stanford, Matthew J. ^{[1
]}

Pounder, Ryan J. ^{[1
]}

Covington, James A. ^{[2
]}

Dove, Andrew P. ^{[1
]}

机构：

[1] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England

[2] Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2010年 / 16卷 / 20期

基金：

英国工程与自然科学研究理事会;

关键词：

lactides; organocatalysis; polyesters; ring-opening polymerization; N-HETEROCYCLIC CARBENES; ORGANOCATALYTIC LIVING POLYMERIZATION; CYCLIC ESTERS; STEREOSELECTIVE POLYMERIZATION; BIODEGRADABLE POLYMERS; ALIPHATIC POLYESTERS; ASYMMETRIC CATALYSIS; PHOSPHAZENE BASES; CYCLODEXTRINS; GUANIDINE;

D O I：

10.1002/chem.200902518

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The ring-opening polymerisation of lactide by a range of amino oxazoline and amino thiazoline catalysts is reported. The more electron-rich derivatives are demonstrated to be the most highly active and polymerisation is well controlled, as evidenced by the linear relationship between the molecular weight and both the monomer conversion and the monomer-toinitiator ratio. Mechanistic studies reveal significant interactions between the monomer, initiator and catalyst and that the polymerisation is first order with respect to each of these components. These observations indicate that the polymerisation operates by a general base/pseudo-anionic mechanism.

引用

页码：6099 / 6105

页数：7

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