Respuesta :

Erythrosin17
Benzaldehyde or C6H5CHO would not undergo the aldol condensation because it does not contain an alpha-hydrogen in its structure. Aldol condensation is a type of reaction that happens between an enolate and an aldehyde or ketone leading to a alkene that has a planar structure. The lack of an alpha-hydrogen would not allow for it to undergo such process since it cannot enolize. Benzaldehyde undergoes a nucleophilic reaction known as Claisen-Schmidt condensation. It has somehow same mechanism of the aldol reaction however, the nucleophilic attack on the carbonyl happens even without the alpha-hydrogen but with an enolate that is from a ketone.

The reason why two molecules of benzaldehyde cannot react via the aldol condensation is that in benzaldehyde, alpha hydrogen is not present to form enolate ion.

What is aldol condensation reaction?

Aldol condensation is a reaction in which beta-hydroxyaldehyde or ketone is formed by the reaction between an enolate ion and carbonyl compound.

Enolate ion which is formed in the aldol condensation is formed by the replacement of alpha hydrogen and then this ion will attack on the carbonyl group of another compound.

So, in the benzaldehyde alpha hydrogen is not present which in turn will not form enolate ion to attack that's why two molecules of benzaldehyde cannot react.

Hence due to lack of alpha hydrogen benzaldehyde will not reacts.

To know more about aldol condensation reaction, visit the below link:
https://brainly.com/question/17211422