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231224s2013 xx |||||o 00| ||eng c |
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|a 10.1021/om4006966
|2 doi
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|a pubmed24n0776.xml
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|a eng
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| 100 |
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|a Endo, Koji
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Investigations into Ruthenium Metathesis Catalysts with Six-Membered Chelating NHC Ligands
|b Relationship between Catalyst Structure and Stereoselectivity
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|c 2013
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 21.10.2021
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a A series of ruthenium catalysts bearing five-membered chelating NHC architectures that exhibit very high Z-selectivity in a variety of metathesis reactions have recently been reported. It was envisioned that catalysts possessing sixmembered chelates could similarly exhibit high Z-selectivity and address limitations of this methodology. We thus prepared a number of new catalysts and systematically investigated the impact of the NHC and anionic ligand on their stereoselectivity. In standard metathesis assays, only catalysts containing six-membered chelated NHC structures and η2-bound anionic ligands favored the Z-olefin products compared to traditional ruthenium catalysts. In addition, substitution with bulkier N-aryl groups led to improved Z-selectivity. The effect of ligand structure on stereoselectivity discovered in this study will be useful in the future design of highly active and Z-selective ruthenium catalysts
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|a Journal Article
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1 |
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|a Herbert, Myles B
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Grubbs, Robert H
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Organometallics
|d 1998
|g 32(2013), 18 vom: 23. Sept.
|w (DE-627)NLM098167103
|x 0276-7333
|7 nnns
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| 773 |
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|g volume:32
|g year:2013
|g number:18
|g day:23
|g month:09
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|u http://dx.doi.org/10.1021/om4006966
|3 Volltext
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|d 32
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|c 09
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