Reaktion #1755445
ord-0de7c4e7f1254c798623acd97ef71758
Reaktionsgleichung
3-carboxy-1H-pyrazol-5-one
diethyl oxalacetate
hydrazine
→
3-(carboethoxy)-pyrazol-5-one
Reagenzien
Keine
Reaktionsbedingungen
Detaillierte Bedingungen
See reaction.notes.procedure_details.
Vorschrift
3-carboxy-1H-pyrazol-5-one, for example, can thus be prepared by reacting diethyl oxalacetate with hydrazine to yield 3-(carboethoxy)-pyrazol-5-one, followed by refluxing in aqueous HCl solution to hydrolyze the ethyl ester.