Dieckmann condensation

Dieckmann condensation
Named after Walter Dieckmann
Reaction type Ring forming reaction
Identifiers
Organic Chemistry Portal dieckmann-condensation
RSC ontology ID RXNO:0000065

The Dieckmann condensation is the intramolecular chemical reaction of diesters with base to give β-keto esters. It is named after the German chemist Walter Dieckmann (1869–1925). The equivalent intermolecular reaction is the Claisen condensation. Dieckmann condensations are highly effective routes to 5-, 6-, and 7-member rings, but poor for larger rings.