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• Lacova, M
• El-Shaaer, HM.
• Loos, D
• Matulova, M
• Chovancova, J
• Furdik, M
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• Lacova, M
• El-Shaaer, HM.
• Loos, D
• Matulova, M
• Chovancova, J
• Furdik, M
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• Lacova, M
• El-Shaaer, HM.
• Loos, D
• Matulova, M
• Chovancova, J
• Furdik, M

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Molecules 1998, 3(3), 120-131; doi:10.3390/30300120

Article

Evaluation of Effect of Microwave Irradiation on Syntheses and Reactions of Some New 3-Acyl-methylchromones

Margita Lacova^1,* , Hafez M. El-Shaaer² , Dusan Loos¹ , Maria Matulova³ , Jarmila Chovancova¹  and Mikulas Furdik¹

¹ Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University, Mlynska dolina CH-2, SK-842 15 Bratislava, Slovak Republic ² Department of Chemistry, Faculty of Education, Ain Shams University, Roxy, Cairo, Egypt ³ Institute of Chemistry Slovak Academic Sciences, 842 38 Bratislava, Slovak Republic

* Author to whom correspondence should be addressed.

Received: 16 January 1998 / Accepted: 17 February 1998 / Published: 10 March 1998

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Abstract: The 3-Acyl-2-R-methylchromones (R = H, ArO, C₆H₄(CO)₂N) were prepared in good yields by different methods from 2-hydroxyaroylacetone derivatives. Some subsequent reactions of these compounds with hydroxylamine and 3-formylchromones are described. The effect of microwave irradation on some condensation reactions was studied.

Keywords: Microwave irradiation; aldol reaction; 4-oxo-4H-[1]-benzopyran derivatives; rearrengement of chromones; 3-formylchromones

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