Synthesis of Cyclic Polyolefin: Ring-Opening Metathesis Polymerization by Binuclear Vanadium Complexes  

作　　者：Xiaohua Hou Xiaojian Chen Xiang Gao Lei Xu Hui Zou Li Zhou Zong-Quan Wu 

机构地区：[1]Department of Polymer Science and Engineering,School of Chemistry and Chemical Engineering,and Anhui Key Laboratory of Advanced Catalytic Materials and Reaction Engineering,Hefei University of Technology,193 Tunxi Road,Hefei,Anhui 230009,China

出　　处：《Chinese Journal of Chemistry》2021年第5期1181-1187,共7页中国化学（英文版）

基　　金：the National Natural Science Foundation of China(No.21901057);the Anhui Provincial Natural Science Foundation(No.1908085QB62);the Fundamental Research Funds for the Central Universities of China(No.PA2020GDSK0070);the National Natural Science Foundation of China(No.51803045).

摘　　要：Ring-opening metathesis polymerization(ROMP)of norbornene by binuclear vanadium alkylidene in-situ formed from dialkyl complexes was investigated.Higher activities were observed by the binuclear system than mononuclear analogues.Especially the cyclic polymers were obtained and demonstrated.It is proposed that cyclic binuclear vanadium alkylidene was afforded due to the intramolecular chain-transfer reaction.The size of polymer ring could be adjusted by the vanadium catalyst structure and polymerization temperature.Similar results were also observed in the ROMP of cyclopentene.

关 键 词：METATHESIS POLYMERIZATION Homogeneous catalysis CARBENES VANADIUM 

分 类 号：O62[理学—有机化学]