Question

Ethanal and propanone undergoes aldol condensation reaction inpresence of dilute alkali to form
A. `CH_(3)C(OH)(CH_(3))CH_(2)CHO`
B. `CH_(3)CH(OH) CH_(2)COCH_(3)`
C. `CH_(3)COC(OH)(CH_(3))_(2)`
D. `CH_(3)COCH(CH_(3))CH_(2)OH`

Answer 1

Correct Answer - B
When aldehydes condenses with ketone, produces four condensation products. It is the `alpha`- hydrogen atom of the ketone which is involved in the condensation reaction and produces major product.
`CH_(3)CHO + HCH_(2)COCH_(3) overset("dil.NaOH") to underset(" 4- hydroxy 2- pentanone")(CH_(3)CH(OH) CH_(2)COCH_(3))`