The Wolff rearrangement is a reaction in organic chemistry in which an α-diazocarbonyl compound is converted into a ketene by loss of dinitrogen with...
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The Beckmann rearrangement, named after the German chemist Ernst Otto Beckmann (1853–1923), is a rearrangement of an oxime functional group to substituted...
14 KB (1,419 words) - 04:50, 28 December 2023
Beckmann rearrangement Curtius rearrangement Hofmann rearrangement Lossen rearrangement Schmidt reaction Tiemann rearrangement Wolff rearrangement Photochemical...
5 KB (595 words) - 23:43, 15 February 2024
(generally) Stevens rearrangement Stieglitz rearrangement Wagner–Meerwein rearrangement Westphalen–Lettré rearrangement Wolff rearrangement Whitmore, Frank...
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Ring expansion and contraction (category Rearrangement reactions)
pinacol rearrangement. While this reaction refers specifically to a vicinal dihydroxide rearrangement, there are other pinacol type rearrangements that proceed...
15 KB (1,704 words) - 16:42, 6 January 2024
reaction. Grob rearrangement of strained rings adjacent to the carbonyl group has been observed by Erman and coworkers. During an attempted Wolff–Kishner reduction...
40 KB (4,211 words) - 13:40, 13 February 2024
Arndt–Eistert reaction (category Rearrangement reactions)
React. 1: 38. Curtius rearrangement Kowalski ester homologation Lossen rearrangement Nierenstein reaction Wolff rearrangement Ye, T.; McKervey, M. A...
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Beckmann rearrangement Bergmann degradation Hofmann rearrangement Lossen rearrangement Schmidt reaction Tiemann rearrangement Neber rearrangement Wolff rearrangement...
16 KB (1,746 words) - 09:24, 4 October 2023
Mechanistically, the α-diazoketone undergoes a Wolff rearrangement to form a ketene in a 1,2-rearrangement. Consequently, the methylene group α- to the...
17 KB (1,867 words) - 15:30, 17 May 2024
transition states) may be involved in carbonylcarbene rearrangements observed in the Wolff rearrangement. Computational evidence also point to the intermediacy...
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reaction now known as the Wolff-Kishner reduction. His name is also associated with the chemical reaction known as the Wolff rearrangement (1912). Jie Jack Li...
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W X Y Z See also External links 1,2-Wittig rearrangement 1,3-Dipolar cycloaddition 2,3-Wittig rearrangement Abramovitch–Shapiro tryptamine synthesis Acetalisation...
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which are generated by thermolysis or photolysis, for example in the Wolff rearrangement. As such they are used in cyclopropanation for example in the reaction...
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relief image during development. Upon photolysis, DNQ undergoes a Wolff rearrangement to form a ketene. The ketene adds water to form indene-carboxylic...
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gaseous nitrogen; this occurs in the Bamford-Stevens reaction and Wolff rearrangement. As with the case of metallocarbenes, some reactions of diazoalkanes...
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ketone in dichloroethane. This reaction utilizes the photochemical Wolff rearrangement of a diazoketone to generate an aryl or vinylketene. These ketene...
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chloride ion: Ketenes can also be formed from α-diazoketones by the Wolff rearrangement. Another way to generate ketenes is through flash vacuum thermolysis...
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undergoes Wolff rearrangement to ketene 6. Ozonolysis forms the ketone 7, another diazotation yields the diazo ketone 8, which undergoes Wolff rearrangement again...
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formation of the dioxane dimer: Maximilian Nierenstein Curtius rearrangement Wolff rearrangement Arndt–Eistert reaction: where acid chlorides react with diazomethane...
4 KB (354 words) - 05:51, 20 October 2020
more fused cyclobutane rings. The final cyclobutane is formed by a Wolff rearrangement, and the alkyl chain is installed by a Wittig olefination. In 2016...
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aryldiazoacetate (red) and the organic azide (blue) to form an imine. A Wolff rearrangement of the diazoacetoacetate enone (black) forms a stable ketene, which...
10 KB (1,158 words) - 23:44, 25 October 2023
The Stieglitz rearrangement is a rearrangement reaction in organic chemistry which is named after the American chemist Julius Stieglitz (1867–1937) and...
21 KB (2,201 words) - 05:30, 23 August 2022
experimentally investigated the mechanism of Wolff rearrangement, showing that the gas-phase Wolff rearrangement of α-keto carbons occurs via an oxy-oxygen...
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Rearrangement reaction Baker–Venkataraman rearrangement Beckmann rearrangement Benzilic acid rearrangement Brook rearrangement Claisen rearrangement Cope...
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active as silver oxide in the Wolff rearrangement. Silver is also present in other carbon-carbon bond skeletal rearrangements such as the quadricyclane to...
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Schmidt reaction (category Rearrangement reactions)
products; such as lactams and alkaloids. Curtius rearrangement Hofmann rearrangement Lossen rearrangement Plagens, Andreas; Laue, Thomas M. (2005). Named...
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ISSN 1521-3773. Meier, Herbert; Zeller, Klaus-Peter (1975). "The Wolff Rearrangement of α-Diazo Carbonyl Compounds". Angewandte Chemie International Edition...
34 KB (3,519 words) - 18:24, 21 March 2024
either Wolff–Kishner reduction or Clemmensen reduction. The net result is the same as the Friedel–Crafts alkylation except that rearrangement is not possible...
20 KB (1,988 words) - 00:39, 15 February 2024
Non-aromatic rings can be aromatized in many ways. Dehydration allows the Semmler-Wolff reaction of 2-cyclohexenone oxime to aniline under acidic conditions. The...
11 KB (1,113 words) - 12:56, 24 January 2023
Edition at the Bärenreiter website. Hans-Joachim Schulze and Christoph Wolff. Bach Compendium: Analytisch-bibliographisches Repertorium der Werke Johann...
61 KB (9,887 words) - 16:13, 18 May 2024