Synthesis and Application of Dicarbonyl Compounds

Dicarbonyl compounds, characterised by two carbonyl groups within a single molecule, occupy a central role in synthetic organic chemistry. Their unique reactivity underpins the construction of heterocycles, natural products and pharmacophores. Traditional routes to 1,4-dicarbonyls rely on enolate chemistry, aldol condensations and Claisen rearrangements, but often suffer from limited selectivity or harsh conditions. Recent advances have introduced polarity inversion (umpolung) strategies, photocatalytic protocols and transition-metal-mediated couplings to access these motifs under milder, more sustainable conditions. The ability to control stereochemistry at two adjacent centres has opened avenues towards complex molecular architectures, including chiral γ-lactams and amino acids. Beyond small-molecule synthesis, dicarbonyl frameworks serve as ligands in catalysis, precursors for polymeric materials and intermediates in drug discovery. The global significance of efficient dicarbonyl synthesis is reflected in applications ranging from antiviral agents to advanced functional materials.

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Synthesis and Application of Dicarbonyl Compounds publication trend

The graph below shows the total number of articles in synthesis and application of dicarbonyl compounds across all publications each year (not limited to Nature Index journals).

Technical terms

Dicarbonyl compound: An organic molecule containing two carbonyl (C=O) functional groups, which may be separated by one or more intervening carbon atoms.

Umpolung: A strategy that reverses the normal electronic character of a functional group, for example converting a nucleophilic α-carbon centre into an electrophile to enable novel bond-forming reactions.

Enolate: The conjugate base of a carbonyl compound, formed by deprotonation at the α-carbon, which functions as a nucleophile in carbon–carbon bond-forming processes.

Photocatalysis: A reaction pathway in which light absorption by a catalyst triggers or accelerates a chemical transformation, often enabling milder reaction conditions and improved selectivity.

References

1. Catalytic Enantioselective Synthesis of 1,4-(Hetero) Dicarbonyl Compounds through α‑Carbonyl Umpolung. Journal of the American Chemical Society (2024).
2. Mizoroki–Heck type reactions and synthesis of 1,4-dicarbonyl compounds by heterogeneous organic semiconductor photocatalysis. Green Chemistry (2021).
3. Cross-coupling of dissimilar ketone enolates via enolonium species to afford non-symmetrical 1,4-diketones. Beilstein Journal of Organic Chemistry (2018).
4. Silver-Catalyzed Controlled Intermolecular Cross-Coupling of Silyl Enol Ethers: Scalable Access to 1,4-Diketones. Organic Letters (2022).