<i>Z</i>-Selective Homodimerization of Terminal Olefins with a Ruthenium Metathesis Catalyst
作者:Benjamin K. Keitz、Koji Endo、Myles B. Herbert、Robert H. Grubbs
DOI:10.1021/ja203488e
日期:2011.6.29
The cross-metathesis of terminal olefins using a novel rutheniumcatalyst results in excellent selectivity for the Z-olefin homodimer. The reaction was found to tolerate a large number of functional groups, solvents, and temperatures while maintaining excellent Z-selectivity, even at high reaction conversions.
使用新型钌催化剂进行末端烯烃的交叉复分解,对 Z-烯烃均二聚体具有优异的选择性。研究发现,即使在高反应转化率下,该反应也能耐受大量官能团、溶剂和温度,同时保持优异的 Z 选择性。
Simple and Highly <i>Z</i>-Selective Ruthenium-Based Olefin Metathesis Catalyst
作者:Giovanni Occhipinti、Fredrik R. Hansen、Karl W. Törnroos、Vidar R. Jensen
DOI:10.1021/ja311505v
日期:2013.3.6
second-generation catalyst with a 2,4,6-triphenylbenzenethiolate ligand resulted in an active olefinmetathesiscatalyst with remarkable Z selectivity, reaching 96% in metathesis homocoupling of terminal olefins. High turnover numbers (up to 2000 for homocoupling of 1-octene) were obtained along with sustained appreciable Z selectivity (>85%). Apart from the Z selectivity, many properties of the newcatalyst, such
Grubbs-Hoveyda 第二代催化剂的单个氯阴离子与 2,4,6-三苯基硫醇盐配体一步取代得到活性烯烃复分解催化剂,具有显着的 Z 选择性,末端烯烃复分解均偶联达到 96% . 获得了高周转数(对于 1-辛烯的同源偶联高达 2000)以及持续可观的 Z 选择性(> 85%)。除了 Z 选择性之外,新催化剂的许多性质,例如对氧气和水的稳定性以及使底物异构化和与内烯烃产物反应的趋势,都与母体催化剂的性质相似。
HIGHLY Z-SELECTIVE OLEFINS METATHESIS
申请人:Schrock Richard R.
公开号:US20110077421A1
公开(公告)日:2011-03-31
The present invention relates generally to catalysts and processes for the Z-selective formation of internal olefin(s) from terminal olefin(s) via homo-metathesis reactions.
本发明通常涉及催化剂和过程,用于通过同型交换反应从末端烯烃中Z-选择性地形成内部烯烃。
Pyridine-Stabilized Fast-Initiating Ruthenium Monothiolate Catalysts for <i>Z</i>-Selective Olefin Metathesis
作者:Giovanni Occhipinti、Karl W. Törnroos、Vidar R. Jensen
DOI:10.1021/acs.organomet.7b00441
日期:2017.9.11
Pyridine as a stabilizing donor ligand drastically improves the performance of ruthenium monothiolate catalysts for olefin metathesis in comparison with previous versions based on a stabilizing benzylidene ether ligand. The new pyridine-stabilized ruthenium alkylidenes undergo fast initiation and reach appreciable yields combined with moderate to high Z selectivity in self-metathesis of terminal olefins
The present invention relates generally to catalysts and processes for the Z-selective formation of internal olefin(s) from terminal olefin(s) via homo-metathesis reactions.