Aldehydes that do not undergo aldol condensation are (1) Propanal (2) – InterviewSolution

1.	Aldehydes that do not undergo aldol condensation are (1) Propanal (2) Trichloroethanal (3) Methanal (4) Ethanal (5) Benzaldehyde
Answer» 3 and 4 only 3 and 5 only 1,2 and 3 only 2 and 5 only Solution :The carbonyl compound must contain an `alpha`-hydrogen atom, for it to undergo ALDOL condensation. However, formaldehyde, though CONTAINS no `alpha`-hydrogen atom yet undergoes abnormal aldol condensation in presence of LIME water.

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