Highly Active Cross-Metathesis of Tetrafluoroethylene with a Seven-Membered N-Heterocyclic-Carbene–Ruthenium Catalyst
作者:Kenta Mori、Midori Akiyama、Ko Inada、Yutaka Imamura、Yuichiro Ishibashi、Yusuke Takahira、Kyoko Nozaki、Takashi Okazoe
DOI:10.1021/jacs.1c10574
日期:2021.12.15
A drastic increase in catalyst turnover number (TON) was accomplished in the cross-metathesis of tetrafluoroethylene (TFE) and vinyl ethers. Under a continuous flow of TFE, catalyst Ru7, which contains a seven-membered N-heterocyclic carbene (NHC) ligand, reached a TON of 4100; this is 2 orders of magnitude higher than the highest hitherto reported value. Mechanistic studies revealed that the expanded
在四氟乙烯 (TFE) 和乙烯基醚的交叉复分解中实现了催化剂周转数 (TON) 的急剧增加。在 TFE 的连续流动下,含有七元 N-杂环卡宾 (NHC) 配体的催化剂Ru7的 TON 达到 4100;这比迄今为止报告的最高值高出 2 个数量级。机理研究表明,扩展的 NHC 成功地破坏了具有二氟卡宾结构的稳定中间体,从而强烈促进了反应。