Effect of the Bulkiness of Indenylidene Moieties on the Catalytic Initiation and Efficiency of Second-Generation Ruthenium-Based Olefin Metathesis Catalysts

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dc.contributor.authorYu, Baoyi
dc.contributor.authorLuo, Zhixiong
dc.contributor.authorHamad, Fatma B.
dc.contributor.authorLeus, Karen
dc.contributor.authorVan Hecke, Kristof
dc.contributor.authorVerpoort, Francis
dc.date.accessioned2016-06-18T17:37:42Z
dc.date.available2016-06-18T17:37:42Z
dc.date.issued2016
dc.description.abstractWe report on the synthesis and characterization of the second generation of ruthenium catalysts bearing various sized indenylidene ligands, denoted as RuCl2(3-(2,6-xylyl)-1-indenylidene)(SIMes)(PCy3) 5a, RuCl2(4-methyl-3-(o-tolyl)-1- indenylidene)(SIMes)(PCy3) 5b, RuCl2(3-1-naphthyl-1-indenylidene)(SIMes)(PCy3) 5c and RuCl2(3-(p-fluorophenyl)-1- indenylidene)(SIMes)(PCy3) 5d. The obtained complexes were characterized by NMR, IR, HRMS and elemental analysis. Moreover, the configurations of complexes 5a, 5b and 5d were confirmed by single-crystal X-ray diffraction analysis. The catalytic performance of the obtained complexes 5a-d were evaluated in several olefin metathesis reactions: the RCM of substrates 6 and 7, the RCEYM of substrate 8 and the ROMP of COD in comparison with the commercially available catalyst 3a. Careful analysis of the catalysts performance and single-crystal X-ray diffraction data of the obtained complexes reveals that the steric modification on the 3-phenyl group can have an obvious influence on the ligands congestion around the ruthenium center and hence, alters the catalytic activities in metathesis reactions. Additionally, the better performing complex 5a was further investigated in the RCM of substrate 6 in comparison with complex 3c and bench mark complexes 1b, 2 and 3a.en_US
dc.identifier.citationYu, B., Luo, Z., Hamad, F.B., Leus, K., van Hecke, K. and Verpoort, F., 2016. Effect of the bulkiness of indenylidene moieties on the catalytic initiation and efficiency of second-generation ruthenium-based olefin metathesis catalysts. Catalysis Science & Technology.en_US
dc.identifier.doi10.1039/C5CY01506E
dc.identifier.urihttp://hdl.handle.net/20.500.11810/2559
dc.language.isoenen_US
dc.titleEffect of the Bulkiness of Indenylidene Moieties on the Catalytic Initiation and Efficiency of Second-Generation Ruthenium-Based Olefin Metathesis Catalystsen_US
dc.typeJournal Article, Peer Revieweden_US
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