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    Evidence for Silica Surface Three- and Five-Membered Metallacycle Intermediates in the Catalytic Cycle of Hydroaminoalkylation of Olefins Using Single-Ti-Metal Catalysts

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    acs.organomet.0c00246.pdf
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    Description:
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    Type
    Article
    Authors
    Yaacoub, Layal F.
    Aljuhani, Maha A. cc
    Jedidi, Abdesslem cc
    Al-Harbi, Manal S.
    Almaksoud, Walid
    Wackerow, Wiebke
    Abou-Hamad, Edy
    Pelletier, Jeremie cc
    El Eter, Mohamad
    Cavallo, Luigi cc
    Basset, Jean-Marie cc
    KAUST Department
    Chemical Science Program
    Imaging and Characterization Core Lab
    KAUST Catalysis Center (KCC)
    NMR
    Physical Science and Engineering (PSE) Division
    Date
    2020-06-30
    Online Publication Date
    2020-06-30
    Print Publication Date
    2020-07-13
    Submitted Date
    2020-04-07
    Permanent link to this record
    http://hdl.handle.net/10754/663954
    
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    Show full item record
    Abstract
    The single-site silica-supported group IV metal amido complex [Ti(NMe2)4] gives the tris(amido)-supported fragment [(=Si−O−)Ti(−NMe2)3], which transforms into a three-membered metallacycle (called a metallaaziridine) by an αH transfer between two amido ligands. When the three-membered metallacycle reacts with 1-octene, it gives a five-membered metallacycle by insertion of the double bond into the M−C bond of the metallaziridine. These two metallacycles, key intermediates in the catalytic cycle of the hydroaminoalkylation of terminal olefins, were isolated and fully characterized following the surface organometallic chemistry (SOMC) concept and procedures. This paper shows that surface organometallic chemistry can be used to identify and fully characterize three- and five-membered metallacycles of Ti in the hydroaminoalkylation of olefins.
    Citation
    Yaacoub, L. F., Aljuhani, M. A., Jedidi, A., Al-Harbi, M. S., Al Maksoud, W., Wackerow, W., … Basset, J.-M. (2020). Evidence for Silica Surface Three- and Five-Membered Metallacycle Intermediates in the Catalytic Cycle of Hydroaminoalkylation of Olefins Using Single-Ti-Metal Catalysts. Organometallics. doi:10.1021/acs.organomet.0c00246
    Sponsors
    The King Abdullah University of Science and Technology (KAUST) supported the research. The authors acknowledge core lab at KAUST for their assistance. L.C. and A.J. are grateful to the KAUST Supercomputing Laboratory for the resources. A.J. thank High-Performance Computing Center (AZIZ supercomputer) for the support.
    Publisher
    American Chemical Society (ACS)
    Journal
    Organometallics
    DOI
    10.1021/acs.organomet.0c00246
    Additional Links
    https://pubs.acs.org/doi/10.1021/acs.organomet.0c00246
    https://pubs.acs.org/doi/pdf/10.1021/acs.organomet.0c00246
    ae974a485f413a2113503eed53cd6c53
    10.1021/acs.organomet.0c00246
    Scopus Count
    Collections
    Articles; Imaging and Characterization Core Lab; Physical Science and Engineering (PSE) Division; Chemical Science Program; KAUST Catalysis Center (KCC)

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