Which of the following will undergo aldol condensation ?

Options

A. Acetaldehyde
B. Propanaldehyde
C. Benzaldehyde
D. Trideutereo acetaldehyde

Answer

A, B, D

Explanation

Those aldehydes give aldol condensation which have `alpha`- hydrogen atoms.
`underset(AII)(2overset(a)(CH_(3)))-CHO overset(NaOH(dil))rarr underset((aq.))(CH_(3))-underset(OH)underset(|)(CH)-CH_(2)-CHO`
`CH_(3)-CH_(2)-CHO+H-underset(OH)underset(|)(CH)-CH_(3)overset(NaOH(dil.))rarr CH_(3)-CH_(2)-underset(OH)underset(|)(CH)-underset(CH_(3))underset(|)(CH)-CH_(3)`
Benzaldehyde does not have `alpha`-hydrogen atom.
`2CD_(3) CHO overset(NaOH(dil.))rarr CD_(3)-underset(OD)underset(|)(CH)-CD_(2)-CHO`