The mixed aldol products obtained from the al | vedclass

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Question

(A) When ethanal $(CH_3CHO)$ and propanone $(CH_3COCH_3)$ undergo crossed-aldol condensation,the nucleophilic enolate of propanone attacks the carbony

Vedclass · Accepted Answer

$4-$hydroxypentan$-2-$one and pent$-3-$en$-2-$one

Vedclass · Answer

(A) When ethanal $(CH_3CHO)$ and propanone $(CH_3COCH_3)$ undergo crossed-aldol condensation,the nucleophilic enolate of propanone attacks the carbonyl carbon of ethanal.$1$. The initial addition product is $4$-hydroxypentan-$2$-one $(CH_3-CH(OH)-CH_2-COCH_3)$.$2$. Upon dehydration (heating),this yields the unsaturated product,pent-$3$-en-$2$-one $(CH_3-CH=CH-COCH_3)$.

The mixed aldol products obtained from the aldol condensation of ethanal $(CH_3CHO)$ and propanone $(CH_3COCH_3)$ are:

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