Ring-opening polymerization of cyclic esters initiated by lithium aggregate containing bis(phenolate) and enolate mixed ligands

被引：22
|
作者：
Liang, Zhenhua [1 ]
Zhang, Min [1 ]
Ni, Xufeng [1 ]
Li, Xue [1 ]
Shen, Zhiquan [1 ]
机构：
[1] Zhejiang Univ, Dept Polymer Sci & Engn, MOE Key Lab Macromol Synth & Functionalizat, Hangzhou 310027, Peoples R China
来源：
INORGANIC CHEMISTRY COMMUNICATIONS | 2013年 / 29卷
基金：
中国国家自然科学基金;
关键词：
Lithium complexes; Enolate; Ligands; Polymerization; Cyclic esters; L-LACTIDE; EPSILON-CAPROLACTONE; COMPLEXES; CATALYSTS;
D O I：
10.1016/j.inoche.2012.12.030
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A novel lithium aggregate complex [(mu(2)-/mu(3)-EDBP)(2)(OCHCH2)Li-5(THF)(4)] (1) has been synthesized by the reaction of 2,2'-ethylidenebis(4,6-di-tert-butyl-phenol) (EDBP-H-2) with 2.5 eq (BuLi)-Bu-n in tetrahydrofuran with high yield. The structure of complex 1 is determined by H-1-NMR and X-ray crystallography. Complex 1 can initiate the living ring-opening polymerization of epsilon-caprolactone and L-lactide yielding polymers with narrow molecular weight distributions, and moreover to prepare the PCL-b-PLA block copolymer. (c) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：145 / 147
页数：3
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