Synthesis of cyclic olefins via Mitsunobu C-alkylation followed by Ramberg-Bäcklund ring contraction
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DOI: 10.1016/j.tetlet.2018.06.014
Abstract: Abstract Cyclic olefins were prepared via a novel synthetic approach that involves the formation of two C C bonds in a potentially stereoselective fashion. The first bond is formed by employing a Mitsunobu dehydrative C-alkylation;… read more here.
Keywords: olefins via; synthesis cyclic; cyclic olefins; ring contraction ... See more keywords
Catalyst Deactivation and Reactor Fouling during Hydrogenation of Conjugated Cyclic Olefins over a Commercial Ni–Mo–S/γ-Al2O3 Catalyst
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DOI: 10.1021/acs.energyfuels.8b00791
Abstract: The dimerization of conjugated cyclic olefins during hydrogenation at low temperatures (≤250 °C) on a spent commercial Ni–Mo–S/γ-Al2O3 catalyst is reported. Hydrogenation of 4-methylstyrene versus α-methylstyrene showed that the methyl group attached to the vinyl… read more here.
Keywords: commercial al2o3; hydrogenation; methylstyrene; cyclic olefins ... See more keywords
(Arylimido)Vanadium(V)-Alkylidenes Containing Chlorinated Phenoxy Ligands: Thermally Robust, Highly Active Catalyst in Ring-Opening Metathesis Polymerization of Cyclic Olefins
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DOI: 10.1021/acs.organomet.8b00231
Abstract: A series of (imido)vanadium(V)-alkylidene complexes containing pentachlorophenoxy ligand of type, V(CHSiMe3)(N-2,6-R2C6H3)(OC6Cl5)(PMe3)2 [R = H, Cl, F, CH3], have been prepared, and the structure of V(CHSiMe3)(N-2,6-Me2C6H3)(OC6Cl5)(PMe3)2 was determined by X-ray crystallographic analysis. Ring-opening metathesis polymerization (ROMP)… read more here.
Keywords: metathesis polymerization; ring opening; opening metathesis; coe ... See more keywords