Cyclooctane metathesis catalyzed by silica-supported tungsten pentamethyl [(ΞSiO)W(Me)5]: Distribution of macrocyclic alkanes
Kharbatia, Najeh M.
KAUST DepartmentKAUST Catalysis Center (KCC)
Analytical Core Lab
Physical Sciences and Engineering (PSE) Division
Chemical Science Program
MetadataShow full item record
AbstractMetathesis of cyclic alkanes catalyzed by the new surface complex [(ΞSiO)W(Me)5] affords a wide distribution of cyclic and macrocyclic alkanes. The major products with the formula CnH2n are the result of either a ring contraction or ring expansion of cyclooctane leading to lower unsubstituted cyclic alkanes (5≤n≤7) and to an unprecedented distribution of unsubstituted macrocyclic alkanes (12≤n≤40), respectively, identified by GC/MS and by NMR spectroscopies.
SponsorsThe authors thank Dr. Raju Dey for his contribution for the synthesis of the silica-supported W catalyst. We are also grateful to Dr. Geert Van Biesen (CREAIT, from University Newfoundland, Canada) for his help for the isolation of the two cyclic alkanes (cC<INF>17</INF> and cC<INF>21</INF>). This work was supported by funds from King Abdullah University of Science and Technology.
JournalChemistry - A European Journal
- Corrigendum: cyclooctane metathesis catalyzed by silica-supported tungsten pentamethyl [(SiO)W(Me)5]: distribution of macrocyclic alkanes.
- Authors: Riache N, Callens E, Samantaray MK, Kharbatia NM, Atiqullah M, Basset JM
- Issue date: 2015 Jun 8
- A well-defined silica-supported tungsten oxo alkylidene is a highly active alkene metathesis catalyst.
- Authors: Conley MP, Mougel V, Peryshkov DV, Forrest WP Jr, Gajan D, Lesage A, Emsley L, Copéret C, Schrock RR
- Issue date: 2013 Dec 26
- Alkane metathesis with the tantalum methylidene [(≡SiO)Ta(═CH2)Me2]/[(≡SiO)2Ta(═CH2)Me] generated from well-defined surface organometallic complex [(≡SiO)Ta(V)Me4].
- Authors: Chen Y, Abou-hamad E, Hamieh A, Hamzaoui B, Emsley L, Basset JM
- Issue date: 2015 Jan 21
- Cationic Silica-Supported N-Heterocyclic Carbene Tungsten Oxo Alkylidene Sites: Highly Active and Stable Catalysts for Olefin Metathesis.
- Authors: Pucino M, Mougel V, Schowner R, Fedorov A, Buchmeiser MR, Copéret C
- Issue date: 2016 Mar 18
- WMe6 tamed by silica: ≡Si-O-WMe5 as an efficient, well-defined species for alkane metathesis, leading to the observation of a supported W-methyl/methylidyne species.
- Authors: Samantaray MK, Callens E, Abou-Hamad E, Rossini AJ, Widdifield CM, Dey R, Emsley L, Basset JM
- Issue date: 2014 Jan 22