Repozytorium
Wyszukaj
Kolekcje
Inne
Ruthenium Complexes with a Tridentate Anionic Bisfluoroalkoxy‐Carbene Ligand – Valuable Latent Olefin Metathesis Catalysts for Polymerisation Reactions
Autorzy
Rok wydania
2024
Czasopismo
European Journal of Inorganic Chemistry
Numer woluminu
27
Strony
e202300783/1-e202300783/13
DOI
10.1002/ejic.202300783
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
A Grubbs-type ruthenium complex bearing a tridentate anionic bisfluoroalkoxy-carbene was synthesised and fully characterised. Under standard conditions, it proved to be inactive in olefin metathesis reactions, but the addition of HCl triggers its activity and allows the synthesis of a series of cyclic olefins and ethers as well as a stereoregular polynorbornene with an unexpectedly high content of trans-configured double bonds, as found in commercially available polynorbornene (Norsorex®). Detailed structural studies and DFT calculations showed that the complex enters the catalytic cycle, but instead of performing a full turnover, it is caught as a stable intermediate that does not undergo further reactions. The addition of HCl causes dissociation of the fluoroalkoxy units, resulting in a compound that behaves similarly to standard Grubbs-type complexes. To further understand this phenomenon, the corresponding Hoveyda-Grubbs complex was also obtained and studied in detail; due to the absence of the phosphine ligand, its behaviour was different from that of its Grubbs-type counterpart.
Słowa kluczowe
olefin metathesis, ruthenium, tridentate ligands, polymerisation
Licencja otwartego dostępu
Licencja na prawach której można swobodnie kopiować, rozprowadzać, zmieniać i remiksować objęty prawem autorskim utwór (Utwór-przedmiot prawa autorskiego) pod warunkiem podania imienia i nazwiska autora utworu pierwotnego oraz źródła pochodzenia utworu.
Pełny tekst licencji: https://creativecommons.org/licenses/by/3.0/pl/legalcode
Adres publiczny
http://dx.doi.org/10.1002/ejic.202300783
Strona internetowa wydawcy
Podobne publikacje
A partially serendipitous discovery of thermo-switchable ruthenium olefin metathesis initiator that seem to be well suited for ROMP of monomers bearing vinyl pendant groups.
Szwaczko Katarzyna, Czeluśniak Izabela, Grela Karol
Rational and then serendipitous formation of aza analogues of Hoveyda-type catalysts containing a chelating ester group leading to a polymerization catalyst family.
Czarnocki Stefan J., Czeluśniak Izabela, Olszewski Tomasz K., Malinska Maura, Woźniak Krzysztof, Grela Karol
Investigation of factors affecting ruthenium complexation in ROMP reactions of oxygen-containing norbornene derivatives using Grubbs first generation initiator.
Czeluśniak Izabela, Heywood J. D., Kenwright A. M., Khosravi Ezat