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    Grafted metallo-carbynes as bifunctional pre-catalysts for ROMP of cyclo-octene and cyclic alkane metathesis

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    Grafted_cctc.202001040.pdf
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    Description:
    Accepted Article
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    Type
    Article
    Authors
    Wackerow, Wiebke
    Samantaray, Manoja
    Basset, Jean-Marie cc
    KAUST Department
    Chemical Science Program
    Physical Science and Engineering (PSE) Division
    KAUST Catalysis Center (KCC)
    Date
    2020-09-09
    Online Publication Date
    2020-09-09
    Print Publication Date
    2020-11-19
    Embargo End Date
    2021-08-13
    Submitted Date
    2020-06-23
    Permanent link to this record
    http://hdl.handle.net/10754/664647
    
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    Abstract
    Metallo-carbynes grafted on mesoporous fibrous silica are active towards alkane metathesis. We are comparing the activity of well-defined grafted pre-catalysts (≡Si-O-)W(≡CCMe3)(-CH2CMe3)2, (≡Si-O-)W(≡CH)(-CH3)2 and (≡Si-O-)Mo(≡CCMe3)(-CH2CMe3)2 for Ring Opening Metathesis Polymerization of cyclo-octene and metathesis of cyclo-octane. This comparison is because olefins are assumed to be intermediate products in alkane metathesis. The three pre-catalysts are active in cyclo-octane metathesis, and give the higher, and lower cyclic homologues. However, with cyclo-octene the three catalysts give polyoctenamer by classical ROMP. It is assumed that the metallo-carbynes react differently towards cyclo-alkanes and cyclo-olefins. In one case, with cyclo-alkanes they give a metallo-carbene alkyl and in the other case with cyclo-olefins they give a bis-carbene.
    Citation
    Wackerow, W., Samantaray, M. K., & Basset, J.-M. (2020). Grafted metallo-carbynes as bifunctional pre-catalysts for ROMP of cyclo-octene and cyclic alkane metathesis. ChemCatChem. doi:10.1002/cctc.202001040
    Sponsors
    We would like to acknowledge King Abdullah University of Science and Technology for funding. We also acknowledge the NMR core lab for their continuous help.
    Publisher
    Wiley
    Journal
    ChemCatChem
    DOI
    10.1002/cctc.202001040
    Additional Links
    https://onlinelibrary.wiley.com/doi/abs/10.1002/cctc.202001040
    ae974a485f413a2113503eed53cd6c53
    10.1002/cctc.202001040
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

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