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- W2113257997 abstract "In this contribution, we present the synthesis of norbornene-supported N-heterocyclic (NHC) carbenes. These functionalized norbornenes were polymerized via ring-opening metathesis polymerization in a controlled fashion either before or after metalation with a variety of palladium and ruthenium precursors resulting in the formation of polymer-supported NHC-based metal catalysts. The activities of the palladium-based catalysts in the Suzuki–Miyaura, Sonogashira and Heck coupling reactions were studied in detail. In all cases, the polymeric catalysts demonstrated the same activity as their small molecule analogues. Furthermore, we carried out preliminary investigations into the stability of these catalysts using poisoning studies. A clear dependence of the stability of the polymer-supported catalysts on their palladium precursor was observed with palladium acetate-based polymeric NHC catalysts being the most stable. Finally, we have studied the reactivity of our supported NHC ruthenium complexes as catalysts for ring-closing metathesis. Again, in all cases good conversions were observed with comparable activities to other supported NHC-ruthenium catalysts. Lastly, we were able to remove the ruthenium catalysts from the solution quantitatively demonstrating the possibility of metal removal." @default.
- W2113257997 created "2016-06-24" @default.
- W2113257997 creator A5054614556 @default.
- W2113257997 creator A5057778420 @default.
- W2113257997 date "2006-10-01" @default.
- W2113257997 modified "2023-10-04" @default.
- W2113257997 title "Poly(norbornene)-Supported N-Heterocyclic Carbenes as Ligands in Catalysis" @default.
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- W2113257997 doi "https://doi.org/10.1002/adsc.200606135" @default.
- W2113257997 hasPublicationYear "2006" @default.
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