Hoveyda-Grubbs type metathesis catalyst immobilized on mesoporous molecular sieves MCM-41 and SBA-15

被引：31

作者：

Balcar, Hynek ^{[1
]}

Shinde, Tushar ^{[1
]}

Zilkova, Nadezda ^{[1
]}

Bastl, Zdenek ^{[1
]}

机构：

[1] AS CR, J Heyrovsky Inst Phys Chem, Vvi, Prague 18223 8, Czech Republic

来源：

BEILSTEIN JOURNAL OF ORGANIC CHEMISTRY | 2011年 / 7卷

关键词：

alkene metathesis; catalyst immobilization; hybrid catalysts; mesoporous molecular sieves; Ru-alkylidene complexes; RING-CLOSING METATHESIS; ELECTRON-WITHDRAWING LIGANDS; OLEFIN METATHESIS; RUTHENIUM CATALYSTS; REACTIVITY; STRATEGIES; CARBENES; SUPPORT; GEL;

D O I：

10.3762/bjoc.7.4

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

A commercially available Hoveyda-Grubbs type catalyst (RC303 Zhannan Pharma) was immobilized on mesoporous molecular sieves MCM-41 and on SBA-15 by direct interaction with the sieve wall surface. The immobilized catalysts exhibited high activity and nearly 100% selectivity in several types of alkene metathesis reactions. Ru leaching was found to depend on the substrate and solvent used (the lowest leaching was found for ring-closing metathesis of 1,7-octadiene in cyclohexane - 0.04% of catalyst Ru content). Results of XPS, UV-vis and NMR spectroscopy showed that at least 76% of the Ru content was bound to the support surface non-covalently and could be removed from the catalyst by washing with THF.

引用

页码：22 / 28

页数：7