Nature of Carbonyl Compounds, Naming and Synthesis of Aldehydes and Ketones
Start with the big picture
The carbonyl group is planar and polarized, making its carbon electrophilic and its oxygen nucleophilic. Resonance contributes to its stability, while aldehydes are generally more reactive than ketones because of steric and electronic effects. The topic also connects acidic α-hydrogens with enolate formation, an important basis for subsequent reactions. Naming focuses on choosing the longest chain containing the carbonyl, assigning the appropriate aldehyde or ketone suffix, and numbering correctly. Synthesis routes include oxidation of primary or secondary alcohols and methods such as Rosenmund reduction, aromatic formylation, alkene ozonolysis, alkyne hydration, and Friedel–Crafts acylation. Together, these ideas provide a foundation for understanding carbonyl structure, nomenclature, and preparation.
What you'll learn
- Describe carbonyl geometry, polarization, resonance, and the resulting reactive centers.
- Compare aldehyde and ketone reactivity using steric and electronic effects.
- Explain how α-hydrogen acidity supports enolate formation.
- Apply IUPAC naming principles to aldehydes and ketones.
- Identify synthesis routes for carbonyl compounds from common starting materials.
Continue your study
Work through the complete notes and reinforce the topic with the study tools available in the full lesson.
