Ruthenium-Indenylidene Olefin Metathesis Catalyst with Enhanced Thermal Stability

被引:33
|
作者
Kabro, Anzhelika [1 ]
Roisnel, Thierry [2 ]
Fischmeister, Cedric [1 ]
Bruneau, Christian [1 ]
机构
[1] Univ Rennes 1, CNRS, UMR Catalyse & Organometall 6226, Campus Beaulieu,263 Ave Gen Leclerc, F-35042 Rennes, France
[2] Univ Rennes 1, CNRS, UMR 6226, Ctr Diffractometrie 10, F-5042 Rennes, France
关键词
indenylidene; latent catalysts; metathesis; olefins; ruthenium; RING-CLOSING METATHESIS; N-HETEROCYCLIC CARBENE; HIGHLY-ACTIVE CATALYSTS; CROSS-METATHESIS; ALKENE METATHESIS; ALLENYLIDENE COMPLEXES; FATTY ESTERS; IN-SITU; EFFICIENT; BEARING;
D O I
10.1002/chem.201001659
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Two new ruthenium complexes bearing a bidentate (kappa O-2, C)-isopropoxy- indenylidene ligand and a PPh3 (9) or PCy3 (10, Cy = cyclohexyl) ligand have been synthesized and fully characterized by H-1 and C-13 NMR spectroscopy and X-ray crystallography. Complex 10 displays a very high thermal stability with a half life of six days at 110 degrees C in [D-8] toluene. Complex 10 was evaluated in various ring-closing metathesis reactions and ring-opening metathesis polymerization of dicyclopentadiene, in which it showed a latent behavior with low activity at room temperature and high activity upon thermal activation.
引用
收藏
页码:12255 / 12261
页数:7
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