Towards ( C,C )‐cyclometalated N ‐(9‐alkylfluorenyl)NHC Ruthenium Complexes for Z ‐selective Olefin Metathesis
| العنوان: | Towards ( C,C )‐cyclometalated N ‐(9‐alkylfluorenyl)NHC Ruthenium Complexes for Z ‐selective Olefin Metathesis |
|---|---|
| المؤلفون: | Katarzyna Gajda, Adrian Sytniczuk, Laure Vendier, Bartosz Trzaskowski, Noël Lugan, Anna Kajetanowicz, Stéphanie Bastin, Karol Grela, Vincent César |
| المساهمون: | Laboratoire de chimie de coordination (LCC), Institut de Chimie de Toulouse (ICT), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Faculty of Chemistry, Warsaw University of Technology, Warsaw University of Technology [Warsaw], Centre National de la Recherche Scientifique |
| المصدر: | European Journal of Inorganic Chemistry European Journal of Inorganic Chemistry, In press, ⟨10.1002/ejic.202300169⟩ |
| بيانات النشر: | HAL CCSD, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | Inorganic Chemistry, Olefin metathesis, [CHIM.ORGA]Chemical Sciences/Organic chemistry, [CHIM.COOR]Chemical Sciences/Coordination chemistry, N-heterocyclic carbenes, [CHIM.CATA]Chemical Sciences/Catalysis, Migration, Ruthenium, Cyclometalation |
| الوصف: | International audience; Three Hoveyda-Grubbs complexes supported by N-(9-alkylfluorenyl)imidazol-2-ylidene ligands (alkyl=methyl, ethyl or benzyl) have been synthesized. With the aim to generate chelating, cyclometalated (C,CNHC) ruthenium complexes for Z-selective olefin metathesis, the C(sp3)-H activation of the dangling alkyl group has been studied. While the methyl derivative leads to the expected cyclometalated complex, a C(sp2)-H activation of the fluorenyl moiety and no evolution/transformation are observed for the ethyl and benzyl derivatives, respectively. Although highly fragile under catalytic conditions, the cyclometalated complex leads to Z/E stereoselectivity up to 94/6. An unprecedented insertion of the alkylidene moiety into the Ru-CNHC bond leading to ruthenium N-heterocyclic olefin complexes is also observed and supported by calculations of the corresponding reaction pathway. |
| اللغة: | English |
| تدمد: | 1434-1948 1099-0682 |
| DOI: | 10.1002/ejic.202300169⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::996fb9e367bfe6de881e761828a89539 https://hal.science/hal-04155197/document |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi.dedup.....996fb9e367bfe6de881e761828a89539 |
| قاعدة البيانات: | OpenAIRE |
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