Which of the following does not give an aldol | vedclass

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Question

(D) For a compound to undergo an aldol condensation reaction,it must possess at least one $\alpha$-hydrogen atom.$CH_3CHO$ (acetaldehyde) has three $\

Vedclass · Accepted Answer

$PhCHO$

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(D) For a compound to undergo an aldol condensation reaction,it must possess at least one $\alpha$-hydrogen atom.$CH_3CHO$ (acetaldehyde) has three $\alpha$-hydrogens.$CD_3CHO$ has three $\alpha$-deuteriums,which can be removed to form an enolate,thus it undergoes aldol reaction.$CH_3COCH_3$ (acetone) has six $\alpha$-hydrogens.$PhCHO$ (benzaldehyde) has no $\alpha$-hydrogen atom attached to the carbonyl carbon,therefore it does not undergo aldol condensation.

Which of the following does not give an aldol reaction with dil. $NaOH$?

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