摘要
本文研究了不同铜盐对溴代苯酚聚合反应产率的影响,利用Taft取代基常数作为考察指标得出sum from(δ(?)>5.5)时,铜(Ⅱ)盐才有催化活性;分离出的铜(Ⅱ)盐中,当CuCl_2·2H_2o/CH_3ONa摩尔比为0.5时,对聚合反应有最大的催化活性.并提出了铜(Ⅱ)盐催化由铜(Ⅱ)——酚氧配合物中间体生成聚合物的单电子转移历程.
The copper (Ⅱ)-catalyzed polymerization of 2,4,6-tribromophenol was studied using different copper(Ⅱ)catalysts. Using Taft substituent constant as parameter, copper(Ⅱ) salt has catalytic activity as ∑δ*>5.5. The reactions with copper(Ⅱ) complexes isolated show that the copper (Ⅱ) complex prepared at a mole ratio of copper (Ⅱ) chloride/sodium methoxide equals 0.5 has maximum activity. Single electron transfer reaction mechanism was proposed for the copper (Ⅱ)-catalyzed polymerization through the copper (Ⅱ)-phenoxo complex intermediate.
出处
《济南大学学报（社会科学版）》
1995年第2期71-76,共6页
Journal of University of Jinan:Social Science Edition
关键词
溴代苯酚
聚(2
6一二溴苯醚)
聚合
反应机理
Tribromophenol
poly(2,6-dibromophenylene Oxide)
polymerization
Reaction mechanism
