A High-Efficiency Strategy for Synthesizing Cyclic Polymers of Methacryates in One Pot
A High-Efficiency Strategy for Synthesizing Cyclic Polymers of Methacryates in One Pot
复制标题
一锅法合成甲基丙烯酸环状聚合物的高效策略
DOI：
10.1002/marc.201300220
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发表时间：
2013
影响因子：
4.6
通讯作者：
Zhu Xiulin
中科院分区：
文献类型：
--
作者：
Zhu Xing;Zhou Nianchen;Zhu Jian;Zhang Zhengbiao;Zhang Wei;Cheng Zhenping;Tu Yingfeng;Zhu Xiulin
开发了一种前所未有的高效制备环状聚合物的策略。在该策略中，原子转移自由基聚合、链端卤化物被叠氮基取代和Cu催化的炔-叠氮环化，即，通过引入“调节剂”，将制备环状聚合物常用的三个独立步骤整合到一锅反应中。这种新策略的核心是利用竞争性ATRP增长与叔碳卤素和仲碳卤素的SN 2取代之间的不同速率。0.55从3.0mL反应溶液中获得2.0g（产率= 59%）环状聚（甲基丙烯酸甲酯）。本工作为环状聚合物的制备提供了一种高效、有前途的方法，将引起人们对环状聚合物的更多研究兴趣。
An unprecedented strategy for the high‐efficiency preparation of the cyclic polymers is developed. In this strategy, the atom transfer radical polymerization, the substitution of chain‐end halide by azide group and Cu‐catalyzed alkyne–azide cyclization, i.e., the frequently used three separated steps for the preparation of cyclic polymers, are integrated into a one‐pot reaction by the introduction of a “regulator”. The kernel of this novel strategy is the utilization of the different rates between the competitive ATRP propagation and SN2 substitution of a tertiary‐carbon halogen and secondary‐carbon halogen. 0.55 g (yield = 59%) cyclic poly(methyl methacrylate) is obtained from 3.0 mL reaction solution. This work proposed a high‐efficiency and bright promising strategy for the preparation of cyclic polymer, which would evoke more research interests on cyclic polymer.