Evidence for Silica Surface Three- and Five-Membered Metallacycle Intermediates in the Catalytic Cycle of Hydroaminoalkylation of Olefins Using Single-Ti-Metal Catalysts
Type
ArticleAuthors
Yaacoub, Layal F.Aljuhani, Maha A.

Jedidi, Abdesslem

Al-Harbi, Manal S.
Almaksoud, Walid
Wackerow, Wiebke
Abou-Hamad, Edy
Pelletier, Jeremie

El Eter, Mohamad
Cavallo, Luigi

Basset, Jean-Marie

KAUST Department
Chemical Science ProgramImaging and Characterization Core Lab
KAUST Catalysis Center (KCC)
NMR
Physical Science and Engineering (PSE) Division
Date
2020-06-30Online Publication Date
2020-06-30Print Publication Date
2020-07-13Submitted Date
2020-04-07Permanent link to this record
http://hdl.handle.net/10754/663954
Metadata
Show full item recordAbstract
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.0c00246Sponsors
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
OrganometallicsAdditional Links
https://pubs.acs.org/doi/10.1021/acs.organomet.0c00246https://pubs.acs.org/doi/pdf/10.1021/acs.organomet.0c00246
ae974a485f413a2113503eed53cd6c53
10.1021/acs.organomet.0c00246