Self-condensation - Wikipedia
In organic chemistry, self-condensation is an organic reaction in which a chemical compound containing a carbonyl group (C=O) acts both as the electrophile and the nucleophile in an aldol condensation.
Aldol Condensation - Chemistry LibreTexts
2023年1月23日 · An aldol condensation is a condensation reaction in organic chemistry in which an enol or an enolate ion reacts with a carbonyl compound to form a β-hydroxyaldehyde or β-hydroxyketone, followed by dehydration to give a conjugated enone.
Aldol condensation - Wikipedia
An aldol condensation is a condensation reaction in organic chemistry in which two carbonyl moieties (of aldehydes or ketones) react to form a β-hydroxyaldehyde or β-hydroxyketone (an aldol reaction), and this is then followed by dehydration to give a conjugated enone. The overall reaction equation is as follows (where the Rs can be H)
23.8: The Aldol Reaction and Condensation of Ketones and …
A useful carbon-carbon bond-forming reaction known as the Aldol Reaction is yet another example of electrophilic substitution at the alpha carbon in enolate anions. The fundamental transformation in this reaction is a dimerization of an aldehyde (or ketone) to a beta-hydroxy aldehyde (or ketone) by alpha C–H addition of one reactant molecule ...
Aldol Addition and Condensation Reactions - Master Organic …
2022年4月14日 · The Aldol Addition reaction is the addition of an enolate to an aldehyde (or ketone). Heating with base can result in loss of water to give a new C-C pi bond, giving a product we refer to as the Aldol Condensation product. Similar reactions can proceed with the enolates of …
Self-aldol condensation of aldehydes over Lewis acidic rare …
2021年4月1日 · The self-aldol condensation of aldehydes was investigated with rare-earth cations stabilized by [Si]Beta zeolites in parallel with bulk rare-earth metal oxides. Good catalytic performance was achieved with all Lewis acidic rare-earth cations stabilized by zeolites and yttrium appeared to be the best metal choice.
Aldol Condensation - Mechanism, Crossed Aldol Condensation …
Aldol condensation occurs in aldehydes having α-hydrogen with a dilute base to give β-hydroxy aldehydes called aldols. This reaction is most commonly known as aldol condensation. If the condensation reaction occurs between two different carbonyl compounds it is …
The Aldol Condensation - Nielsen - Wiley Online Library
The aldol condensation includes reactions producing beta-hydroxy aldehydes or beta-hydroxy ketones by self condensations or mixed condensations of aldehydes and ketones as well as reactions leading to alpha, beta-unsaturated aldehydes or alpha,beta-unsaturated ketones formed by dehydration of intermediate beta-aldols or beta-ketals.
Aldol Condensation - an overview | ScienceDirect Topics
The aldol condensation reaction produces β-hydroxyaldehyde (aldol) or β-hydroxyketones from two carbonylic compounds with at least a hydrogen atom at the α-position with respect to such groups. Starting from two different carbonyl compounds the …
Aldol Condensation - Organic Chemistry Portal
Aldol Condensation. In some cases, the adducts obtained from the Aldol Addition can easily be converted (in situ) to α,β-unsaturated carbonyl compounds, either thermally or under acidic or basic catalysis. The formation of the conjugated system …