synthesis of (e)-2-styrylchromones and flavones by base-catalyzed cyclodehydration of the appropriate β-diketones using water as solvent
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ID: 145089
2015
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Abstract
A low cost, safe, clean and environmentally benign base-catalyzed cyclodehydration of appropriate β-diketones affording (E)-2-styrylchromones and flavones in good yields is disclosed. Water was used as solvent and the reactions were heated using classical and microwave heating methods, under open and closed vessel conditions. β-Diketones having electron-donating and withdrawing substituents were used to evaluate the reaction scope. The reaction products were isolated in high purity by simple filtration and recrystallization from ethanol, when using 800 mg of the starting diketone under classical reflux heating conditions.
| Reference Key |
pinto2015moleculessynthesis
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|---|---|
| Authors | ;Joana Pinto;Vera L. M. Silva;Ana M. G. Silva;Artur M. S. Silva |
| Journal | Journal of ethnopharmacology |
| Year | 2015 |
| DOI |
10.3390/molecules200611418
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| URL | |
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