Synthesis and Reactions of b-Dicarbonyl Compounds

These flashcards cover key reactions and concepts related to the synthesis and reactions of b-dicarbonyl compounds.

Claisen Condensation

A reaction where two esters or one ester and a carbonyl compound react in the presence of a base to form a β-keto ester or a β-diketone.

Dieckmann Condensation

An intramolecular Claisen condensation that forms a cyclic β-keto ester.

Aldol Reaction

A reaction in which an enolate reacts with a carbonyl compound, leading to the formation of a β-hydroxy carbonyl compound.

Aldol Condensation

The dehydration of an aldol addition product to form an α,β-unsaturated carbonyl compound.

Michael Addition

A nucleophilic addition to an α,β-unsaturated carbonyl compound.

Robinson Annulation

A reaction that combines a Michael addition and an intramolecular aldol condensation to form cyclic structures.

Enolate Ion

A nucleophilic species formed by deprotonation of the α-hydrogen of a carbonyl compound.

Crossed Claisen Condensation

A Claisen condensation that involves two different carbonyl compounds, typically yielding a mixture of products.

Nucleophilic Addition

The addition of a nucleophile to a carbonyl compound, forming a tetrahedral intermediate.

Keto-enol Tautomerism

The equilibrium between the keto and enol forms of a carbonyl compound.