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Showing 1 to 20 of 22 for “"Decarbonylation"”.
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Free Radical Rearrangements in the Decarbonylation of Aldehydes
Made available in DSpace on 2014-12-05T19:36:12Z (GMT). No. of bitstreams: 1 0013505.pdf: 7451229 bytes, checksum: 610e313513b5f10a398fa2c0d35e9287 (MD5) Previous issue date: 1955
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Quantitative Studies of the Decarbonylation of Aliphatic and Bridgehead Aldehydes
Made available in DSpace on 2014-12-09T17:35:04Z (GMT). No. of bitstreams: 1 6503609.pdf: 5251458 bytes, checksum: 9a68a0182632adfcaa63bc6c748f82ae (MD5) Previous issue date: 1964
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Carbon Isotope Effect Studies of the Decarbonylation of Formic Acid
Made available in DSpace on 2014-12-05T19:36:44Z (GMT). No. of bitstreams: 1 0025225.pdf: 3702059 bytes, checksum: 40c1692e40197262edcb196e97f17941 (MD5) Previous issue date: 1957
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Stabilities of Cycloalkyl and 1-Methylcycloalkyl Radicals From Quantitative Decarbonylation Studies
Made available in DSpace on 2014-12-10T23:01:03Z (GMT). No. of bitstreams: 1 7114830.pdf: 8307322 bytes, checksum: e36efc1c028cb7f4b2ca0d05d4dc42af (MD5) Previous issue date: 1970
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Properties of Bimetallic Catalysts Prepared From Alumina Supported Mixed Metal Catalysts
… sites of varying size and stoichiometry. The decarbonylation of mixed metal carbonyl clusters has been suggested as a method of preparing highly dispersed crystallites of well defined size and stoichiometry.
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Some chemistry of Group IVB-cobalt carbonyl compounds
… depending on the ratio of the reactants. Decarbonylation of a mixture of Me₂Ge₂Co₄(CO)₁₄, MeGeCo₃(CO)₁₁ and MeGeHCo₂(CO)ₓ produced a small amount of (MeGe)₂Co₄(CO)₁₁ together with a new compound Me₃Ge₃Co₅(CO)₁₄ (or (MeGe)₂Co₄(CO)₁₀(μ-Ge(Me)Co(CO)₄)) which was characterised by a full …
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Synthesis of Novel Cyclobutane Nucleoside Analogues
… products are suspected to be cyclopropanes from decarbonylation of the ketones, since these are less polar and show shielding of protons in their corresponding NMR spectra, consistent with substituted cyclopropanes.
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The ultra-selective hydrogenation of Furfural on PtCu supported bimetallic nanoparticles and on Pt(111) under ultra-high vacuum
… Scanning Tunnelling Microscopy suggest that the decarbonylation of furfural on clean Pt(111) and the hydrogenation of furfural on hydrogen pre-covered Pt(111) is governed by surface crowding, molecular orientation and hydrogen bonding networks of the adsorbed molecules. Liquid phase …
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Diferrous Structural and Functional Models of the Iron-Only Hydrogenases
… CN-ligand to give [HFe2(S2C3H6)(CN)(CNH)(CO) 4. Decarbonylation of Et4N[HFe2(S2C 3H6)(CN)2(CO)4] in the presence of PPh3 resulted in Et4N[HFe2(S2C 3H6)(CN)2(CO)3(PPh3)] followed by Et4N[HFe2(S2C3H6)(CN) 2(CO)2(PPh3)2], which exist as multiple isomers. Photolysis of McCN solutions of Et4N[HFe2(S …
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Electrochemical behaviour of some organometallic compounds containing iron and molybdenum
… of the solvent. The relative rates of decarbonylation of the acyl species could be assessed through cyclic voltammetry. The electrochemical behaviour of heterobimetallic complexes of the type CpFe(CO)₂(CH₂)nMo(CO)₃Cp (n = 3 to 6) was found to be solvent dependent. The anodic waves …
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Functional Characterization of Fatty Acyl-Reductase CG17560 in Drosophila Melanogaster
… alcohols. Aldehydes may serve as precursors for decarbonylation, resulting in hydrocarbon production which could then be purified as biofuel. The FAR 17560 protein from Drosophila melanogaster was analyzed for its substrate specificity and resulting product. The experiment involved baculoviral …
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Carboxylic Acid Hydrodeoxygenation over Supported Noble Metal Catalysts
… that lead to a myriad of undesired products. Decarbonylation (DCN) is the most selective pathway over Pt catalysts, while both DCN and methanation chemistries are heavily dominant over Ru catalysts. The high selectivity to DCN products for both catalysts snowballs into the second issue which …
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Activating Aldehyde C-H Bonds: Applications to Hydroacylation and Transfer Hydroformylation
… and avoids issues of competitive aldehyde decarbonylation. γ-Butyrolactones and δ-valerolactones were generated with high enantiomeric excess by using Noyori's asymmetric transfer hydrogenation catalyst. This overall-oxidative reaction is inhibited by oxidant (acetone) and autocatalytic in …
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Studies of Iridium Carbonyl Cluster Complexes
… compound 5 was converted to 4 in 68% yield by decarbonylation and cleavage of a phenyl group from one of its GePh<sub>3</sub> ligands by heating a toluene solution to reflux (110°C) for 1 h. A computational study has revealed that the mechanism of transformation of 5 to 4 occurs by elimination …
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The reactions of group IVB hydrides with carbonyl complexes of cobalt and manganese
… such a group IVB - transition metal cluster. The decarbonylation of Ge₂Co₆(CO)₂₀ yielded the new compound [(OC)₄CoGe]₂Co₄(CO)₁₁ : which was found by X-ray crystallography to have a similar square bipyramidal structure. The new tin hydrides; MeSnH₂Mn(CO)₅ and Me₂SnHMn(CO)₅, have been prepared by …
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Osmium complexes as models for CO reduction intermediates
… stable example of an intermediate formed during decarbonylation of a simple aldehyde by a transition metal, the osmium monohapto-acetyl-hydrido complex Os(η1-C[O]CH3)H(CO)2(PPh3)2, has been demonstrated. A preliminary study of the reactions of the osmium iodomethyl complex Os(CH2I)I(CO)2(PPh3)2 …
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Incorporation of cyanide ligands into models of [FeFe]- and [NiFe]-hydrogenase
… [NiFe]-H2ase models are examined in Chapter 4 by decarbonylation the [NiFe]-H2ase models (CO)2(CN)2Fe(pdt)Ni(dxpe). The compound (CO)2(CN)2Fe(pdt)Ni(dppe) was present as only the cis-CO, trans-CN isomer. Using the more basic diphosphine dcpe formed both the cis-CO, trans-CN isomer and cis-CO, …
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Chemical Studies of some Fungi
… from the acetate derivatives was observed. Decarbonylation and fragmentation involving the heterocyclic ring system resulted in peaks of only minor intensity. The ready loss of substituents as described above is explained by the resulting formation of resonance stabilized quinonoid ions. …
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The synthesis and reactivity of binuclear μ-hydrocarbyl complexes of some transition metals
… on the other hand, were prepared by the decarbonylation of the corresponding diacyl compounds of the type, [M(CO)₅]₂{μ-CO(CH₂)nCO} (M = Mn or Re). These diacyl species in turn were synthesized by the reaction of Na[M(CO)s] with diacyl chlorides. All the new compounds have been fully …
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Selektive Hydrierung biogener organischer Disäuren mit Rutheniumphosphinkatalysatoren
… of carbonyldihydrido(TriPhos)ruthenium(II) by decarbonylation of aldehydes could be demonstrated. A new synthesis route was developed yielding carbonyldihydrido(TriPhos)ruthenium(II) in 85% as yellow powder from rutheniumacetylacetonat, Triphos and propanal. By comparision of the activity of …
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