How will you convert ethanal into but-2-enoic acid?
Aldol condensation:
Aldol Condensation in Aldehydes with Base as a Catalyst:
Step 1: The α-Hydrogen from the base is removed
Step 2: Then the carbanion is formed which undergoes a nucleophilic addition reaction with the carbonyl group present in the second molecule of the aldehyde Step 3: Then the formation of the condensation product.
Step 4: Protonation of alkoxide ions will occur due to a reaction with water.
Step 5: The heating of the aldol compound in the basic solution will help in dehydrating the product to form ‐unsaturated aldehyde compound.
Ethanal to but-2-enal:
Step 1 Formation of Hydroxybutanal:
Step 2 Formation of But-2-enoic acid
But-2-enal under goes Oxidation to form But-2-enoic acid