A High-Efficiency Strategy for Synthesizing Cyclic Polymers of Methacryates in One Pot

作者：Zhu Xing; Zhou Nianchen^*; Zhu Jian; Zhang Zhengbiao; Zhang Wei; Cheng Zhenping; Tu Yingfeng; Zhu Xiulin

来源：Macromolecular Rapid Communications, 2013, 34(12): 1014-1019.

DOI：10.1002/marc.201300220

• alkyne-azide &quot
• click&quot
• chemistry
• ATRP
• cyclic poly(alkyl methacrylate)
• regulator
• SN2 nucleophilic substitution reaction

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.

• 出版日期2013-6-25
• 单位苏州大学