Catalytic Method for Synthesis of Benzopyrano[3,2-c]chromene-6,8-dione Derivatives by Heteropoly Acids |
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| Authors: | Radineh Motamedi Saeede Baghbani Fatemeh F. Bamoharram |
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| Affiliation: | 1. Department of Chemistry, School of Sciences , Payam Noor University (PNU) , Delijan , Iran r_motamedi@pnu.ac.ir;3. Department of Chemistry, School of Sciences , Payam Noor University (PNU) , Tehran , Iran;4. Department of Chemistry , Islamic Azad University , Mashhad , Iran |
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| Abstract: | Benzopyrano[3,2-c]chromene-6,8-dione derivatives were prepared by a three-component one-pot cyclocondensation of 4-hyroxycoumarin, aldehydes, and 1,3,cyclohexadione using a catalytic amount of heteropolyacids in boiling ethanol in very good yields and rates. |
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| Keywords: | Benzopyrano[3,2-c]chromene catalytic cyclocondensation catalytic reaction heteropolyacid |
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