Preparation and characterization of aluminum alkoxides and their application to ring-opening polymerization of ε-caprolactones

被引：16

作者：

Yu, TL ^{[1
]}

Huang, CH ^{[1
]}

Yang, LF ^{[1
]}

Ko, BT ^{[1
]}

Lin, CC ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Chem, Taichung 402, Taiwan

来源：

JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 2000年 / 47卷 / 06期

关键词：

aluminum; alkoxide; catalyst; polymerization; caprolactone;

D O I：

10.1002/jccs.200000160

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The reaction of 2-methoxybenzyl alcohol with one molar equiv of R2AlX in diethyl ether at 0 degreesC gives [(2-MeOC6H4CH2-mu -O)AIRX](2) (1: R = Et, X = Cl, 2: R = X = Et). In addition, 2,4-di-tert-butylphenol reacts with (Bu3Al)-Bu-1 affording a four-coordinated aluminum compound [(mu -2,4-Bu-t(2)-C6H4O)Al(Bu-i)(2)](2) (4). Single crystal X-ray structure analysis of 4 shows a C-2h-symmetry with a planar Al2O2 core. Ring-opening polymerization (ROP) of caprolactones initiated by 1, 4 and [(mu -OCH2C6H4OMe)Al(Bu-i)(2)](2) (3) is performed and polyesters with narrow molecular weight distributions were obtained from the "living" ROP of caprolactones. H-1 NMR spectroscopic studies of PCL reveal that the initiator of 1 and 3 is through the Al-OAr function, but the initiator of 4 is through the Al-Bu-i group.

引用

页码：1185 / 1190

页数：6

共 25 条

[1] LIVING AND IMMORTAL POLYMERIZATIONS [J].