Diazoacetates as Terminating Agents in Living Ring-Opening Metathesis Polymerization: Synthesis of Chain-End-Functionalized Polymers
作者:Xin Wang、Yichen Sun、Xing-Qi Yao、Yan Xu、Jianbo Wang
DOI:10.1021/acs.macromol.2c01402
日期:2022.10.11
We report herein a simple, efficient strategy to access diverse end-functionalized polymers from a living ring-opening metathesis polymerization process using diazoacetates as a new terminating agent. Such a terminating process occurs via a C═C bond-forming reaction between the chain-end ruthenium carbenes and the diazoacetates, resulting in the rapid construction of a unique, α,β-unsaturated carbonyl
我们在此报告了一种简单、有效的策略,该策略使用重氮乙酸盐作为新的终止剂,从活性开环复分解聚合过程中获得多种末端官能化聚合物。这种终止过程通过链端钌卡宾和重氮乙酸酯之间的 C=C 键形成反应发生,导致在超过 95% 的链端快速构建独特的 α,β-不饱和羰基基序5分钟内。可以使用各种容易获得和不同取代的重氮乙酸酯,从而可以在聚合物链端轻松引入一组额外的有用官能团。进一步证明了多种聚合后修饰,包括迈克尔加成、“点击”反应和链延伸。