rearrangement
91Neber rearrangement — The Neber rearrangement is an organic reaction in which an oxime is converted into an alpha aminoketone in a rearrangement reaction.[1][2] The oxime is first converted to a ketoxime tosylate by reaction with tosyl chloride. Added base forms a… …
92Metal-ion-catalyzed σ-bond rearrangement — The metal ion catalyzed σ bond rearrangement reaction occurs with highly saturated organic ring molecules treated by Ag+, Rh(I), or Pd(II) ions[1]. Two types of the reaction were noted: [2+2] ring openings, and a conversion to another ring system …
93Dimroth rearrangement — The Dimroth rearrangement is a rearrangement reaction taking place with certain 1,2,3 triazoles where endocyclic and exocyclic nitrogen atoms switch place [1]. This organic reaction was discovered in 1909 by Otto Dimroth [2][3][4] …
94Inégalité de réarrangement — Sommaire 1 Énoncé 2 Démonstration 3 Applications 3.1 Job shop à une machine 3.2 …
95Allylic rearrangement — An allylic rearrangement or allylic shift is an organic reaction in which the double bond in an allyl chemical compound shifts to the next carbon atom. It is encountered in nucleophilic substitution.In reaction conditions that favor a SN1… …
96Pummerer rearrangement — The Pummerer rearrangement is an organic reaction whereby an alkyl sulfoxide rearranges to an α acyloxy thioether in the presence of acetic anhydride.Ref|Pummerer1909 Ref|Pummerer1910 In this reaction, sulfur is reduced while adjacent carbon is… …
97Fritsch-Buttenberg-Wiechell rearrangement — The Fritsch Buttenberg Wiechell rearrangement, named for Paul Ernst Moritz Fritsch, Wilhelm Paul Buttenberg, and Heinrich G. Wiechell, is a chemical reaction whereby a 1,1 diaryl 2 bromo alkene rearranges to a 1,2 diaryl alkyne by reaction with a …
98Westphalen-Lettré rearrangement — The Westphalen Lettré rearrangement is a classic organic reaction in organic chemistry describing a rearrangement reaction of cholestane 3β,5α,6β triol diacetate with acetic anhydride and sulfuric acid. In this reaction one equivalent of water is …
99Halogen dance rearrangement — The halogen dance rearrangement is an organic reaction in which a halogen substituent moves to a new position on an aromatic ring system. The reaction belongs to a class of organic reactions called 1,2 rearrangements. The original halogen dance… …
100Ferrier rearrangement — The Ferrier rearrangement is an organic reaction that involves a nucleophilic substitution reaction combined with an allylic shift in a 2,3 Unsaturated glycoside (see glycals).In this example of a Ferrier rearrangement tri O acetyl D glucal (OAc… …
