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Q.

Which of the following will undergo aldol condensation?

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a

CH2=CHCHO

b

CH ≡ CCHO

c

CH3CH2CHO

d

C6H5CHO

answer is D.

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Detailed Solution

 

Aldehyde having no α hydrogen undergo Cannizaro reaction, to give one mole of carboxylic acid and one mole alcohol. If alpha hydrogen is present with respect to C=O group, then it undergoes aldol condensation.

Propanal has alpha hydrogen and undergoes carbanion formation needed to undergo aldol.

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Which of the following will undergo aldol condensation?