Aldol Condensation can be defined as an organic reaction in which enolate ion reacts with a carbonyl compound to form β-hydroxy ketone or β-hydroxy aldehyde, followed by dehydration to give a conjugated enone. Aldol Condensation plays a vital role in organic synthesis, creating a path to form carbon-carbon bonds.
The general reaction of aldol condensation is

General Aldol Condensation Reaction
One of the common examples for base-catalyzed aldol condensation is stated below in which catalyst generally used is hydroxide ion.
