Which one of the following is not formed by a | vedclass

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(D) The aldol condensation of a mixture of ethanal $(CH_3CHO)$ and propanal $(CH_3CH_2CHO)$ involves four possible products:$1$. Self-condensation of

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Hex$-3-$enal

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(D) The aldol condensation of a mixture of ethanal $(CH_3CHO)$ and propanal $(CH_3CH_2CHO)$ involves four possible products:$1$. Self-condensation of ethanal: $CH_3CH=CHCHO$ (But$-2-$enal).$2$. Self-condensation of propanal: $CH_3CH_2CH=C(CH_3)CHO$ ($2-$Methylpent$-2-$enal).$3$. Cross-condensation (ethanal as nucleophile,propanal as electrophile): $CH_3CH_2CH=CHCHO$ (Pent$-2-$enal).$4$. Cross-condensation (propanal as nucleophile,ethanal as electrophile): $CH_3CH=C(CH_3)CHO$ ($2-$Methylbut$-2-$enal).Hex$-3-$enal is not formed in this reaction.

Which one of the following is not formed by aldol condensation of a mixture of ethanal and propanal?

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