Ring-opening copolymerization of CHO (cyclohexene oxide) and MA (maleic anhydride) catalyzed by the Co(III)-Salalen complex

被引：6
|
作者：
Zhang, Xingmei [1 ]
Liu, Yaoju [1 ]
Chen, Yan [1 ]
Zhang, Zhao [1 ]
Fan, Daidi [1 ]
Lu, Xingqiang [1 ]
机构：
[1] NW Univ Xian, Sch Chem Engn, Shaanxi Key Lab Degradable Med Mat, Xian 710069, Shaanxi, Peoples R China
来源：
INORGANIC CHEMISTRY COMMUNICATIONS | 2014年 / 48卷
基金：
高等学校博士学科点专项科研基金;
关键词：
Co(III)-Salalen complex; Copolymerization of CHO and MA; Polyester and poly(ester-co-ether); ALTERNATING COPOLYMERIZATION; POLYESTERS; EPOXIDES;
D O I：
10.1016/j.inoche.2014.08.018
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
A new complex [Co(L)(OAc)] (1), obtained from the coordination and subsequent oxidation reactions with Co(OAc)(2) and the asymmetrical Salalen ligand H2L (H2L: (E)-2-((2-3,5-di-tert-butyl-2-hydroxybenzylideneamino)phenylamino)methyl)-4,6-di-tert-butylphenol), is shown to be an effective catalyst for ring-opening copolymerization of CHO (cyclohexene oxide) and MA (maleic anhydride) in the presence of one of the three co-catalysts (DMAP (4-(dimethylamino) pyridine), TPP (triphenylphosphine) and n-Bu4NBr). 1/DMAP gives relatively higher CHO monomer conversions than that of 1/TPP or 1/n-Bu4NBr, and especially on the condition of lower temperature (50-80 degrees C), shorter reaction time (75 min) or lower catalyst feeding molar ratio (CHO:MA:1:DMAP = 500:500:1:1), all the solution polymerizations afford perfectly alternating polyester. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：69 / 72
页数：4
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