Aldol Condensation Reaction

The additon reaction of enol or enolate to the carbonyl function of aldehyde or ketone is known as aldol addition . The beta -hydroxyaldehyde or beta- hydroxyketone so obtained undergo dehydration in second step to produce a conjugated enone. The first part of reaction is an addition reaction and the second part is an elimination reaction. Carbonyl compound having alpha -hydrogen undergoes aldol condensation reaction . 2CH_(3)CH_(2)-overset(O)overset(||)C-Hunderset(Delta)overset(""^(Ө)OH)rarrCH_(3)CH_(2)CH=underset(CH_(3))underset(|)C-overset(O)overset(||)C-H Which of the following will give aldol condensation ?

Carbonyl compound which contains alpha-H gives aldol condenation reaction in presence of alkaline medium. The reaction between two molecules of acetaldehyde take placeas follows in presence of base Intramolecular aldol condensation reaction is given by

Rate OF Aldol Condensation, Retro Aldol with Examples

Aldol condensation is: