Summary
The title chalcone derivatives react with aqueous sodium hydroxide of various concentrations to form aurones as the major product, together with small amounts of flavones. However, the introduction of 4′-nitro or 4′-chloro substituents resulted in the formation of flavones as the major product.
Zusammenfassung
Die im Titel genannten Chalconderivate reagieren mit Natronlauge in verschiedenen Konzentrationen, wobei Aurone zusammen mit geringen Mengen an Flavonen entstehen. Die Einführung von 4′-Nitro- oder 4′-Chlor-Substituenten führte jedoch zur bevorzugten Bildung von Flavonen.
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Donnelly, J.A., Higginbotham, C.L. O-Heterocycles by the cyclization of side-chain bromomethoxylated 2′-acetoxychalcones. Monatsh Chem 122, 83–87 (1991). https://doi.org/10.1007/BF00815169
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DOI: https://doi.org/10.1007/BF00815169