期刊
MOLECULES
卷 20, 期 6, 页码 11418-11431出版社
MDPI
DOI: 10.3390/molecules200611418
关键词
(E)-2-styrylchromones; flavones; cyclodehydration reactions; microwave heating; reactions in water
资金
- University of Aveiro
- Fundacao para a Ciencia e a Tecnologia (FCT, Portugal)
- European Union
- QREN
- FEDER
- COMPETE [UID/QUI/00062/2013]
- project QREN [FCOMP-01-0124-FEDER-010840-PTDC/QUI-QUI/102454/2008]
- Mais Centro-Programa Operacional Regional do Centro
- EU, FEDER
- FCT [SFRH/BD/77807/2011]
- project New Strategies Applied to Neuropathological Disorders [CENTRO-07-ST24-FEDER-002034]
- Fundação para a Ciência e a Tecnologia [SFRH/BD/77807/2011] Funding Source: FCT
A low cost, safe, clean and environmentally benign base-catalyzed cyclodehydration of appropriate -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. -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.
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