Preparation of 5‐Aryl‐3‐Oxo‐δ‐Lactones by the Potassium Carbonate–Promoted Condensation of Aromatic Aldehydes and Ethyl Acetoacetate in Ethanol

Autor: Carl Stanley, Jessica Gereg, Mical Amanuel, Brad Andersh
Rok vydání: 2008
Předmět:
Zdroj: Synthetic Communications. 38:482-488
ISSN: 1532-2432
0039-7911
DOI: 10.1080/00397910701796493
Popis: 5‐Aryl‐3‐oxo‐δ‐lactones (6‐aryl‐dihydro‐2H‐pyran‐2,4(3H)‐diones) were prepared by the potassium carbonate–promoted condensation of aromatic aldehydes and ethyl acetoacetate in absolute ethanol. Benzaldehyde and substituted benzaldehydes bearing an alkoxy group (2 or 3 position), a chlorine atom (2, 3, or 4 position), a nitro group (3 or 4 position), a cyano group (4 position), or an acetyl group (4 position) react in high yields under these conditions.
Databáze: OpenAIRE
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