Olefin dismutation: Reactions of olefins on cobalt oxide-molybdenum oxide-alumina

Bradshaw, C.P.C.; Howman, E.J.; Turner, Laurie J.

doi:10.1016/0021-9517(67)90105-4

Cited by 102 publications

(7 citation statements)

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“…Parallel to the development of carbene polymerization on gold and other metal surfaces, reports of heterogeneous catalysts capable of mediating olefin metathesis reactions , appeared in the scientific literature as early as the mid-1960s, and these catalysts almost certainly operated via the mechanism proposed by Hérisson and Chauvin, which also involved a metal alkylidene intermediate. Unbeknownst to the authors of those earliest reports on heterogeneous metathesis, they had likely prepared molybdenum-based surfaces coated with alkylidene ligands, which participated in their observed olefin metathesis reaction.…”

Section: Surfaces Stabilized By Alkylidenesmentioning

confidence: 99%

Carbene Ligands in Surface Chemistry: From Stabilization of Discrete Elemental Allotropes to Modification of Nanoscale and Bulk Substrates

2015

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Section: Surfaces Stabilized By Alkylidenesmentioning

confidence: 99%

Carbene Ligands in Surface Chemistry: From Stabilization of Discrete Elemental Allotropes to Modification of Nanoscale and Bulk Substrates

2015

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“…They showed that 2-butene wast ransformed into propene with high selectivity in the presence of ethylenew hen these two gases were passed over aC oO·MoO 3 ·Al 2 O 3 catalyst at 180 8C (Scheme 2a). [3] At 160 8Cw ith the same catalyst, 4-methylpent-2-ene selectively led to propene and3 -methylbut-1-ene (Scheme 2b). [3] The authors declared that "ethenolysisi st hus an ovel reaction, of great potential, for splitting internal olefins into two molecules of 1-olefin".…”

Section: The Early Daysmentioning

confidence: 99%

“…[3] At 160 8Cw ith the same catalyst, 4-methylpent-2-ene selectively led to propene and3 -methylbut-1-ene (Scheme 2b). [3] The authors declared that "ethenolysisi st hus an ovel reaction, of great potential, for splitting internal olefins into two molecules of 1-olefin".…”

Section: The Early Daysmentioning

confidence: 99%

ChemInform Abstract: Ethenolysis: A Green Catalytic Tool to Cleave Carbon—Carbon Double Bonds

2016

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“…Thus, they contributed important experimental evidence to the transalkylidenation mechanism of acyclic olefins, which they proposed t o name metathesis, and indicated a common basis for olefin disproportionation and ring opening polymerization. Consequently, they postulated the following transalkylidenation mechanism for the ring opening polymerization, for which they substantially adopted the quasi-cyclobutane intermediate suggested by BRADSHAW et al 24).…”

Section: Ring Opening Catalystsmentioning

confidence: 99%

Studies on the mechanism of the ring opening polymerization of cycloolefins with particular reference to cycloolefin copolymerizations

Dall'Asta

1972

Makromol. Chem.

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The ring opening polymerization of cycloolefins in the presence of widely different transition metal catalysts leads to unsaturated polyalkenamers. The evolution of this reaction and of the catalysts is illustrated.Cycloolefin copolymerizations have allowed to elucidate aspects concerning the site of ring opening for different catalysts and classes of cycloolefins. Further studies and observations refer to the transition state and to the stereochemistry of the cycloolefin coordination.The comparison of the cycloolefin copolymerization and the cycloolefin insertion into preformed polyalkenamers allows deductions concerning the permanence of the catalytic centers.Some properties of regular model polymers derived from hydrogenated poly(methy1-a1kenamer)s are compared with those of the corresponding ethylene/propylene copolymers. ZUSAMMENFASSUNG:Die ringoffnende Polymerisation von Cycloolefinen in Gegenwart von sehr verschiedenen ubergangsmetall-Katalysatoren fuhrt zu ungesattigten Polyalkenameren. Die Entwicklung dieser Reaktion und der Katalysatoren wird beschrieben.Cycloolefin-Copolymerisationen lassen fur verschiedene Katalysatoren und Klassen von Cycloolefinen Betrachtungen iiber den Ort der Ringoffnung zu. Weitere Untersuchungen und Beobachtungen betreffen den fjbergangszustand und die Stereochemie der Cycloolefin-Koordination.Ein Vergleich der Cycloolefin-Copolymerisation mit der Insertionsreaktion von Cycloolefinen in vorgebildete Polyalkenamere gibt Hinweise auf die Permanens der katalytischen Zentren.Einige Eigenschaften regelmafiiger Modell-Polymerer, die durch Hydrierung von Polymethylalkenameren erhalten wurden, werden mit denen der entsprechenden Hthylenl Propylen-Copolymeren verglichen. *) With the exception of Chapter 111.

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Olefin dismutation: Reactions of olefins on cobalt oxide-molybdenum oxide-alumina

Cited by 102 publications

References 1 publication

Carbene Ligands in Surface Chemistry: From Stabilization of Discrete Elemental Allotropes to Modification of Nanoscale and Bulk Substrates

Carbene Ligands in Surface Chemistry: From Stabilization of Discrete Elemental Allotropes to Modification of Nanoscale and Bulk Substrates

ChemInform Abstract: Ethenolysis: A Green Catalytic Tool to Cleave Carbon—Carbon Double Bonds

Studies on the mechanism of the ring opening polymerization of cycloolefins with particular reference to cycloolefin copolymerizations

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