The Claisen condensation is a carbon–carbon bond forming reaction that occurs between two esters or one ester and another carbonyl compound in the presence...
7 KB (627 words) - 23:49, 14 February 2024
In organic chemistry, the Claisen–Schmidt condensation is the reaction between an aldehyde or ketone having an α-hydrogen with an aromatic carbonyl compound...
3 KB (313 words) - 00:27, 23 May 2023
as the Claisen condensation and the Dieckman condensation (intramolecular Claisen condensation), which form alcohols as by-products. Condensation reactions...
4 KB (390 words) - 14:34, 19 May 2024
(1869–1925). The equivalent intermolecular reaction is the Claisen condensation. Dieckmann condensations are highly effective routes to 5-, 6-, and 7-member...
3 KB (286 words) - 03:15, 28 December 2023
Claisen-Schmidt condensation between an aldehyde or ketone having an α-hydrogen with an aromatic carbonyl compound lacking an α-hydrogen. A Claisen condensation...
17 KB (1,679 words) - 06:32, 22 March 2024
which can further react, e.g., the Claisen condensation and its intramolecular equivalent, the Dieckmann condensation. This conversion is exploited in the...
41 KB (4,351 words) - 00:19, 1 May 2024
Stobbe condensation is also illustrated by the synthesis of the drug tametraline. Aldol condensation Polyketide synthase Dieckmann condensation Claisen condensation...
2 KB (224 words) - 15:35, 10 July 2023
δ-unsaturated carbonyl Claisen condensation, a reaction between esters and carbonyl compounds in the presence of a strong base Ireland–Claisen rearrangement,...
472 bytes (93 words) - 16:34, 11 January 2020
Crossed Claisen condensations, in which the enolate and nucleophile are different esters, are also possible. An intramolecular Claisen condensation is called...
25 KB (3,012 words) - 11:17, 17 April 2024
Claisen (German pronunciation: [ˈʁaɪnɐ ˈklaɪzn̩]; 14 January 1851 – 5 January 1930) was a German chemist best known for his work with condensations of...
7 KB (781 words) - 09:43, 7 April 2024
Darzens reaction (redirect from Darzens–Claisen reaction)
The Darzens reaction (also known as the Darzens condensation or glycidic ester condensation) is the chemical reaction of a ketone or aldehyde with an...
7 KB (717 words) - 13:38, 27 December 2023
elimination Ciamician–Dennstedt rearrangement Claisen condensation Claisen rearrangement Claisen–Schmidt condensation Clemmensen reduction Collins reagent Combes...
38 KB (3,433 words) - 17:07, 5 January 2024
Reaction etc. Reactions using Organometallic reagents or basic agents: Claisen condensation, formation of enolates or Grignard reaction. Reduction and oxidation...
10 KB (1,058 words) - 06:11, 26 January 2024
the current AT domain. The ACP-bound elongation group reacts in a Claisen condensation with the KS-bound polyketide chain under CO2 evolution, leaving a...
18 KB (2,158 words) - 12:48, 25 May 2024
catalyse the carbon–carbon-bond formation via a thioester-dependent Claisen condensation reaction mechanism. Thiolases are a family of evolutionarily related...
19 KB (2,117 words) - 15:10, 26 February 2024
inhibiting the reaction. Benzoin condensation Bouveault–Blanc reduction Claisen condensation Dieckmann condensation Bouveault, L.; Locquin, R. (1905)...
8 KB (867 words) - 01:43, 7 May 2024
through a Claisen condensation. This produces a racemic mixture of the 2-substituted pyrrolidine, with the retention of the thioester from the Claisen condensation...
162 KB (17,679 words) - 23:29, 22 May 2024
atom. Enols are commonly used in condensation reactions, including the Claisen condensation and the aldol condensation reactions.[citation needed] Examples...
17 KB (2,150 words) - 17:01, 18 April 2024
often performed in organic chemistry classes, and is called Claisen-Schmidt condensation. Prolonged exposure to sunlight initiates [2+2] cycloadditions...
10 KB (741 words) - 10:03, 7 November 2023
acceptors. Unlike 1,3-dicarbonyls, which are easily accessed through the Claisen condensation, or 1,5-dicarbonyls, which are commonly made using a Michael reaction...
19 KB (2,357 words) - 19:34, 9 March 2023
unreactive toward ethanol: CH3CO2C2H5 + NaOH → C2H5OH + CH3CO2Na In the Claisen condensation, anhydrous ethyl acetate and strong bases react to give ethyl acetoacetate:...
21 KB (1,825 words) - 08:49, 22 May 2024
second carbon from the carboxylic acid. They generally form by the Claisen condensation. The presence of the keto group at the beta position allows them...
6 KB (648 words) - 16:38, 13 August 2023
methoxy group): The key step in the assembly of quinotoxine is a Claisen condensation: 1944: Robert Burns Woodward and W. E. Doering report the synthesis...
18 KB (2,207 words) - 23:38, 11 April 2024
Mevalonate synthesis begins with the beta-ketothiolase-catalyzed Claisen condensation of two molecules of acetyl-CoA to produce acetoacetyl CoA. The following...
8 KB (959 words) - 23:27, 8 December 2021
The fatty acids are synthesized by a series of decarboxylative Claisen condensation reactions from acetyl-CoA and malonyl-CoA. Following each round of...
35 KB (4,020 words) - 10:13, 27 March 2024
phenylacetic acid ethyl ester. Subsequently, this ester undergoes cross Claisen condensation using diethyl oxalate, giving diethyl ester of phenyloxobutandioic...
49 KB (4,938 words) - 01:56, 25 May 2024
through a Claisen condensation. This produces a racemic mixture of the 2-substituted pyrrolidine, with the retention of the thioester from the Claisen condensation...
7 KB (803 words) - 05:59, 7 December 2023
2-oximinoacetoacetate and 2-methyl-3-oxobutanal, in turn made by the Claisen condensation of 2-butanone with ethyl formate. George Kleinspehn reported that...
14 KB (1,546 words) - 23:40, 21 March 2024
domain, followed by transfer to malonyl-ACP via decarboxylative Claisen condensation. This fragment is then able to react with the masked carbanion formed...
33 KB (3,142 words) - 17:38, 21 February 2024
4-methoxyacetophenone in toluene in the presence of sodium amide via Claisen condensation. According to a recent patent application, yields of up to 95% are...
24 KB (2,308 words) - 11:55, 31 March 2024