- Acetoacetic Ester Synthesis: The formation of a substituted acetone through the base-catalyzed alkylation or arylation of a β-keto ester.
- Aldol Cyclization: An internal aldol condensation.
- Aldol Reaction: The formation of an aldol (β-hydroxy carbonyl compound) through the catalyzed condensation of an enol/enolate with a carbonyl compound.
- Cannizzaro Reaction: The formation of an acid and an alcohol through the base-catalyzed disproportionation of an aliphatic or aromatic aldehyde with no α-hydrogen atoms.