Question

Benzaldehyde does not undergo aldol condensation explain

Answer 1

Aldol condensation is very much reversible in the presence of the above three conditions; however, in their absence, the Aldol products are completely stable.

Benzalaldehyde does not undergo aldol condensation, but it undergoes a process known as Claisen-Schmidt condensation; this reaction simply refers to the nucleophilic attack on the carbonyl without an alpha-hydrogen with an enolate derived from a ketone. Subsequently, elimination of water follows the creation of a conjugated carbonyl group.

Benzaldehyde acts as an electriphilic carbonyl; it also reacts with an acetone to produce two products. The absence of the alpha-hydrogen in benzaldehyde makes it impossible for it to enolize. Reactivity of the aldehydes is considerably higher than that of ketones. However, these processes are known as condensation processes because one molecule of water is formed from two reactants.

Answer 2

Benzaldehyde does not undergo Aldol condensation because Aldol condensation reaction - the self condensed reaction between aldehyde or ketone (having only one alpha - H-atom) in presence of cold. dill. NaOH solution, beta hydroxyaldehyde or beta hydroxyketone is obtained. Which on further heating in presence of acidic or basic medium, alpha beta-unsaturated carbonyl compound obtained