Highly heteroselective ring-opening polymerization of rac-lactide initiated by bis(phenolato)scandium complexes

被引:250
|
作者
Ma, Haiyan
Spaniol, Thomas P.
Okuda, Jun
机构
[1] Rhein Westfal TH Aachen, Inst Anorgan Chem, D-52056 Aachen, Germany
[2] E China Univ Sci & Technol, Inst Appl Chem, Lab Organomet Chem, Shanghai 200237, Peoples R China
关键词
lactides; ligand effects; polymerization; scandium; stereoselectivity;
D O I
10.1002/anie.200603178
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
(Chemical Equation Presented) Tactical response: High heterotactic stereocontrol was observed from the ring-opening polymerization of rac-lactide on using a series of bis(phenolato)scandium complexes (see scheme). This stereocontrol appears to involve a dynamic monomer-recognition process as a result of the interconversion of the configuration from Λ into Δ. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:7818 / 7821
页数:4
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