The compound obtained when acetaldehyde react | vedclass

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(D) When acetaldehyde $(CH_3CHO)$ reacts with dilute aqueous sodium hydroxide $(NaOH)$,it undergoes aldol condensation due to the presence of $\alpha-

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both optical and geometrical isomerism

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(D) When acetaldehyde $(CH_3CHO)$ reacts with dilute aqueous sodium hydroxide $(NaOH)$,it undergoes aldol condensation due to the presence of $\alpha-H$ atoms.The reaction is: $2CH_3CHO \xrightarrow{dil. NaOH} CH_3CH(OH)CH_2CHO$ ($3$-hydroxybutanal).This aldol product contains one chiral (asymmetric) carbon atom,which makes it optically active,thus exhibiting optical isomerism.Upon heating,the aldol loses a water molecule to form an $\alpha,\beta$-unsaturated aldehyde: $CH_3CH(OH)CH_2CHO \xrightarrow{\Delta} CH_3CH=CHCHO$ (but$-2-$enal).This alkene $(CH_3CH=CHCHO)$ exhibits geometrical isomerism due to the restricted rotation around the $C=C$ double bond.

The compound obtained when acetaldehyde reacts with dilute aqueous sodium hydroxide exhibits

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