Question
Explain aldol condensation reaction of propionaldehyde.
✓
Answer
Since propionaldehyde has an $a-$hydrogen atom it undergoes aldol condensation with alkali $Ba(OH)_2,$ forming $3-$Hydroxy$-2-$methylpentanal.
$3-$Hydroxy$-2-$methylpentanal on heating undergoes dehydration and forms $2-$Methylpent$-2-$enal.
$3-$Hydroxy$-2-$methylpentanal on heating undergoes dehydration and forms $2-$Methylpent$-2-$enal.
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