Disproportionation of olefins catalysed by group VI transition metal oxides.
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Disproportionation of olefins catalysed by group VI transition metal oxides.

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Published .
Written in English


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Thesis (Ph. D.)--The Queens" University of Belfast, 1972.

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Pagination1 v
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Open LibraryOL21529798M

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The transition metal-catalysed reduction of olefins and carbonyl groups are amongst the most used reactions in synthetic chemistry. Recent developments using iron catalysts have shown that iron species are able to equal the activity of the traditionally used transition metals in these reductions. This review Organic Collection: from theory to synthesis, from molecules to materials, catalysis. Jul 01,  · The promotion of an aluminum-rhenium catalyst, containing –% of Re2O7, by molybdenum oxides and tetraalkylstannanes increases its activity substantially in the disproportionation of olefins. Disproportionation of olefins on modified aluminum-rhenium catalysts | SpringerLinkAuthor: E. I. Bogolepova, R. A. Fridman, A. N. Bashkirov. Transition Metal Peroxides. Synthesis and Role in Oxidation Reactions is prepared either through a disproportionation process of the molybdenum(V) cyano intermediate or by controlled. Diaminations are a girl's best friend: New reactions in the field of transition-metal-catalyzed diamination of olefins provide a powerful tool for the elaboration of more complex molecules bearing.

Jan 28,  · Diaminations are a girl's best friend: New reactions in the field of transition-metal-catalyzed diamination of olefins provide a powerful tool for the elaboration of more complex molecules bearing the 1,2-diamine moiety. An overview of these methods, including asymmetric versions, is given. Transition Metal Catalyzed Reactions of Olefins in Water: Olefin Metathesis and Isomerization. Authors; Authors and affiliations; R. H. and Ziller, J. W. () Ring-Opening Metathesis Polymerization (ROMP) of Norbornene by a Group VIII Carbene Complex in Protic Media Transition Metal Catalyzed Reactions of Olefins in Water: Olefin Cited by: 7. We have discovered that N-sulfonyl oxaziridines react with a broad range of olefins in the presence of iron salts to afford 1,3-oxazolidines. This process provides access to 1,2-aminoalcohols with the opposite sense of regioselectivity produced from the copper-catalyzed oxyamination previously reported by our laboratories. Thus, either regioisomeric form of 1,2-aminoalcohols can easily be. Jan 01,  · The activation of olefins for asymmetric chemical synthesis traditionally relies on transition metal catalysts. In contrast, biological enzymes with Brønsted acidic sites of appropriate strength can protonate olefins and thereby generate carbocations that ultimately react to form natural products.

4 Early Transition Metal Catalysts for the Living Polymerization of Olefins and Alkynes by Jennifer Adamchuk Submitted to the Department of Chemistry On November 29th, in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Chemistry. This paper describes a method, discovered and refined by parallel screening, for the epoxidation of alkenes. It uses hydrogen peroxide as the terminal oxidant, is promoted by catalytic amounts (− mol %) of manganese(2+) salts, and must be performed using at least catalytic amounts of bicarbonate buffer. Peroxymonocarbonate, HCO4-, forms in the reaction, but without manganese, minimal Cited by: May 23,  · A chemoselective reduction of olefins and acetylenes is demonstrated by employing catalytic amounts of ferric chloride hexahydrate (FeCl 3 ⋅6 H 2 O) and aqueous hydrazine (NH 2 NH 2 ⋅H 2 O) as hydrogen source at room temperature. The reduction is chemoselective and tolerates a variety of reducible functional groups. Iron catalysed nitrosation of olefins to oximes Authors contributing to RSC publications (journal articles, books or book chapters) do not need to formally request permission to reproduce material contained in this article provided that the correct acknowledgement is given with the reproduced material. Cited by: