Question

The carbonyl compound that does not undergo aldol condensation is

• A. Acetone
• B. Di chloro acetaldehyde
• C. Tri chloro acetaldehyde
• D. Acetaldehyde

Answer 1

Answer: (C)

Tri chloro acetaldehyde

Answer 2

At least one $\alpha$-hydrogen should be present for an aldehyde or a ketone to undergo aldol reaction. The only compound that does not have even one $\alpha$-hydrogen is trichloroacetaldehyde, and hence, it does not undergo aldol reaction.