Tytuł pozycji:
Ruthenium Olefin Metathesis Catalysts Bearing a Macrocyclic N-Heterocyclic Carbene Ligand: Improved Stability and Activity
- Tytuł:
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Ruthenium Olefin Metathesis Catalysts Bearing a Macrocyclic N-Heterocyclic Carbene Ligand: Improved Stability and Activity
- Autorzy:
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Woźniak, Krzysztof
Kośnik, Wioletta
Śnieżek, Marcin
Malińska, Maura
Grela, Karol
Kajetanowicz, Anna
Trzaskowski, Bartosz
Lichosyt, Dawid
Janaszkiewicz, Angelika
- Współwytwórcy:
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Biological and Chemical Research Centre, Faculty of Chemistry, University of Warsaw
Institute of Physical Chemistry, Polish Academy of Sciences
Institute of Organic Chemistry, Polish Academy of Sciences
Centre of New Technologies, University of Warsaw
- Słowa kluczowe:
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ruthenium
catalyst design
reaction mechanisms
N-heterocyclic carbenes
olefin metathesis
- Data publikacji:
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2022
- Wydawca:
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Wiley
- ISBN, ISSN:
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15213773
14337851
- Język:
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angielski
- Linki:
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https://depot.ceon.pl/handle/123456789/21684  Link otwiera się w nowym oknie
- Prawa:
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http://creativecommons.org/licenses/by/4.0/
- Dostawca treści:
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Repozytorium Centrum Otwartej Nauki
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Przejdź do źródła  Link otwiera się w nowym oknie
Formation of sterically hindered C−C double bonds via catalytic olefin metathesis is considered a very challenging task for Ru catalysts. This limitation led to the development of specialised catalysts bearing sterically reduced N-heterocyclic carbene (NHC) ligands that are very active in such transformations, yet significantly less stable as compared to general purpose catalysts. To decrease the small-size NHC catalysts susceptibility to decomposition, a new NHC ligand was designed, in which two sterically reduced aryl arms were tied together by a C-8 alkyl chain. The installation of this macrocyclic ligand on the ruthenium centre led to the formation of an olefin metathesis catalyst (trans-Ru6). Interestingly, this complex undergoes transformation into an isomer bearing two Cl ligands in the cis-arrangement (cis-Ru6). These two isomeric complexes exhibit similarly high thermodynamic stability, yet different application profiles in catalysis.
National Science Centre, MAESTRO: DEC-2019/34/A/ST4/00372
Biological and Chemical Research Centre, University of Warsaw, established within the project co-financed by European Union from the European Regional Development Fund under the Operational Programme Innovative Economy, 2007–2013