title: Cyclooctane metathesis catalyzed by silica-supported tungsten pentamethyl [(≡SiO)W(Me)5]: distribution of macrocyclic alkanes.
abstract: Metathesis of cyclic alkanes catalyzed by the new surface complex [(≡SiO)W(Me)5] affords a wide distribution of cyclic and macrocyclic alkanes. The major products with the formula C(n)H(2n) 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.
authors.affiliation: KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuwal 23955-6900 (Kingdom of Saudi Arabia).
authors.forename: Nassima
authors.initials: N
authors.lastname: Riache
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Callens
authors.forename: Manoja K
authors.initials: MK
authors.lastname: Samantaray
authors.forename: Najeh M
authors.initials: NM
authors.lastname: Kharbatia
authors.forename: Muhammad
authors.initials: M
authors.lastname: Atiqullah
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Basset
keywords: NMR spectroscopy; alkanes; macrocycles; metathesis; tungsten