Notable effect of imino substituent for the efficient ring-opening polymerization. of ε-caprolactone initiated by Al complexes containing phenoxy-imine ligand of type, Me2Al(L) [L: O-2-tBu-6-(RN=CH)C6H3; R: 2,6-iPr2C6H3, tBu, adamantyl, C6F5]

被引：61
|
作者：
Iwasa, Naruhito [1 ,2 ]
Liu, Jingyu [1 ]
Nomura, Kotohiro [1 ]
机构：
[1] Nara Inst Sci & Technol, Grad Sch Mat Sci, Nara 6300101, Japan
[2] Daiso Co Ltd, Res Labs, Amagasaki, Hyogo 6600842, Japan
来源：
CATALYSIS COMMUNICATIONS | 2008年 / 9卷 / 06期
基金：
日本学术振兴会;
关键词：
Al complex; ring-opening polymerization; caprolactone; ligand effect;
D O I：
10.1016/j.catcom.2007.10.025
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Al complexes containing phenoxy-imine ligands of type, Me2Al[O-2-tBu-6-(RN{double bond, long}CH)C6H3] [R = 2,6-iPr2C6H3 (1), tBu (2), adamantyl (3), C6F5 (4)] were prepared, identified, and their structures for 1-3 were determined by X-ray crystallography. The catalytic activity (turnover number, TON) in the ring-opening polymerization (ROP) of ε-caprolactone initiated by 1-4 upon the presence of nBuOH increased in the order: 4 ≫ 1 ≫ 2 > 3, suggesting that the imino substituent (R) plays an important role for the efficient ROP in a controlled manner; the highly efficient ROP has been achieved by the C6F5 analogue (4). © 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：1148 / 1152
页数：5
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