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Epimerization, transacylation and bromination of dihydroquercetin acetates; synthesis of 8-bromodihydroquercetin

โœ Scribed by Eberhard Kiehlmann; Monica G. Szczepina

Book ID
111488217
Publisher
SP Versita
Year
2011
Tongue
English
Weight
464 KB
Volume
9
Category
Article
ISSN
1895-1066

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Epimerization, transacylation and bromin
Epimerization, transacylation and bromination of dihydroquercetin acetates; synthesis of 8-bromodihydroquercetin
โœ Eberhard Kiehlmann; Monica G. Szczepina ๐Ÿ“‚ Article ๐Ÿ“… 2011 ๐Ÿ› SP Versita ๐ŸŒ English โš– 464 KB

## Abstract Dihydroquercetin (dhq) and its 3-acetate react with acetic anhydride in the absence of a base catalyst to yield mixtures of partially acetylated products. Three new esters were characterized by NMR spectroscopy as dhq 3,7,3โ€ฒ-triacetate, 3,7,4โ€ฒ-triacetate and 5,7,3โ€ฒ,4โ€ฒ-tetraacetate. At i