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

页码：1148 / 1152

页数：5

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