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
• 来源期刊: 中国化学（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: Concise Reports
• 页码范围: 1181-1187
• 页数: 7页
• 语种: 英文
• DOI: 10.1002/cjoc.202000636

摘要

Main observation and conclusion Ring-opening metathesis polymerization (ROMP) of norbornene by binuclear vanadium alkylidene in-situ formed from dialkyl com-plexes 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 intra-molecular 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.