Olefin metathesis catalysts bearing hemilabile NHC ligands: Effect of remote torsional strain on activity

被引：2
作者：
Wang, Haoyu [1 ]
Yu, Haitao [1 ]
Bai, Dong [1 ]
Yao, Dan [1 ]
Han, Yongjun [1 ]
Shi, Yichao [2 ]
Wang, Zhiqun [1 ,3 ]
机构：
[1] Aerosp Ctr Hosp, Dept Radiol, Beijing, Peoples R China
[2] Aerosp Ctr Hosp, Dept Gastroenterol, Beijing, Peoples R China
[3] Peking Univ, Aerosp Ctr Hosp, Dept Radiol, Aerosp Sch Clin Med, 15 Yuquan Rd, Beijing, Peoples R China
来源：
JOURNAL OF CATALYSIS | 2023年 / 421卷
关键词：
Olefin metathesis; Ruthenium; N -heterocyclic carbene; Hemilabile; Catalysis; Decomposition; N-HETEROCYCLIC CARBENE; DECOMPOSITION; INITIATORS; MECHANISM; COMPLEXES; EFFICIENT;
D O I：
10.1016/j.jcat.2023.03.039
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A ruthenium olefin metathesis catalyst (C1-H) bearing a novel NHC ligand tethered by a labile ethoxy-pyridyl arm was synthesized and characterized. The initiation rate, kinetics, metathesis activity, and decomposition behavior were compared with its methylated derivative (C1-Me), showing that these two catalysts vary profoundly. We demonstrate the considerable influence of remote torsional strain on the catalytic activity and decomposition behavior of this ligand class - a feature that can be exploited for related systems.Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons. org/licenses/by/4.0/).
引用
收藏
页码：376 / 383
页数：8
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