rearrangement

  • 51Cope rearrangement — The Cope rearrangement is an extensively studied organic reaction involving the [3,3] sigmatropic rearrangement of 1,5 dienes.[1][2][3][4] It was developed by Arthur C. Cope. For example 3 methyl 1,5 hexadiene heated to 300°C yields 1,5… …

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  • 52Demjanov rearrangement — The Demjanov rearrangement is the chemical reaction of primary amines with nitrous acid to give rearranged alcohols.[1][2][3] It involves substitution by a …

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  • 53Divinylcyclopropane-cycloheptadiene rearrangement — The divinylcyclopropane cycloheptadiene rearrangement is an organic chemical transformation that involves the isomerization of a 1,2 divinylcyclopropane into a cycloheptadiene or triene. It is conceptually related to the Cope rearrangement, but… …

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  • 54Curtius rearrangement — The Curtius rearrangement (or Curtius reaction or Curtius degradation), as first defined by Theodor Curtius, is a chemical reaction that involves the rearrangement of an acyl azide to an isocyanate.[1][2] Several reviews have been… …

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  • 55Meyer–Schuster rearrangement — The Meyer Schuster rearrangement is the chemical reaction described as an acid catalyzed rearrangement of secondary and tertiary propargyl alcohols to α,β unsaturated ketones if the alkyne group is internal and α,β unsaturated aldehydes if the… …

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  • 56Wagner–Meerwein rearrangement — A Wagner–Meerwein rearrangement is a class of carbocation 1,2 rearrangement reactions in which a hydrogen, alkyl or aryl group migrates from one carbon to a neighboring carbon.[1][2] Several reviews have been published.[3][4][5] …

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  • 57Tiffeneau–Demjanov rearrangement — The Tiffeneau Demjanov rearrangement (TDR) is the chemical reaction of a 1 aminomethyl cycloalkanol with nitrous acid to form an enlarged cycloketone. The Tiffeneau–Demjanov ring expansion, Tiffeneau–Demjanov rearrangement, or TDR, provides an… …

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  • 58Newman–Kwart rearrangement — The Newman–Kwart rearrangement is a type of rearrangement reaction in which the aryl group of an O aryl thiocarbamate, ArOC(=S)NMe2, migrates from the oxygen atom to the sulfur atom, forming an S aryl thiocarbamate, ArSC(=O)NMe2.[1][2][3] The… …

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  • 59Di-pi-methane rearrangement — The di pi methane rearrangement is a photochemical reaction of a molecular entity comprising two π systems, separated by a saturated carbon atom (a 1,4 diene or an allyl substituted aromatic analog), to form an ene (or aryl ) substituted… …

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  • 60Beckmann rearrangement — The Beckmann rearrangement, named after the German chemist Ernst Otto Beckmann (1853–1923), is an acid catalyzed rearrangement of an oxime to an amide. [cite journal author= E. Beckmann title = Zur Kenntniss der Isonitrosoverbindungen journal =… …

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