Versatile catalytic systems based on complexes of zinc, magnesium and calcium supported by a bulky bis(morpholinomethyl)phenoxy ligand for the large-scale immortal ring-opening polymerisation of cyclic esters

被引：200

作者：

Poirier, Valentin ^{[1
]}

Roisnel, Thierry ^{[1
]}

Carpentier, Jean-Francois ^{[1
]}

Sarazin, Yann ^{[1
]}

机构：

[1] Univ Rennes 1, CNRS, UMR 6226, F-35042 Rennes, France

来源：

DALTON TRANSACTIONS | 2009年 / 44期

关键词：

GROUP-3; METAL-COMPLEXES; EPSILON-CAPROLACTONE; LACTIDE POLYMERIZATION; POLY(TRIMETHYLENE CARBONATE); AMINOTROPONIMINATE CALCIUM; MOLECULAR-STRUCTURE; ALUMINUM COMPLEXES; BETA-BUTYROLACTONE; RACEMIC LACTIDE; POLY(LACTIDE);

D O I：

10.1039/b917799j

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new heteroleptic ethyl-zinc complex stabilized by a chelating bis(morpholinomethyl) phenoxy ligand has been synthesised and shown to be a highly potent initiator for the immortal ring-opening polymerisation (ROP) of lactide and beta-butyrolactone, being able to convert up to 50 000 equiv. of monomer in the presence of up to 1000 equiv. of an alcohol as transfer agent. Two related heteroleptic complexes of magnesium and calcium have also been prepared. These complexes are stable in solution, even in the presence of large amounts of alcohol, and constitute effective catalysts for the immortal ROP of lactide under mild conditions.

引用

页码：9820 / 9827

页数：8

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