Which of the following reactions does not represent the aldol condensation reaction?

Step-by-step solution

Aldol condensation is a condensation reaction 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 conjugate enone, i.e., aldehyde or ketone should have at least one α - hydrogen, which undergoes the reaction with dilute NaOH + β - hydroxy carbonyl compounds gives aldol condensation. Reagents: Dilute KOH ,   NaOH ,   Na 2 CO 3 ,   Ca OH 2 or dilute acid.