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A fast and highly efficient protocol for synthesis of dihydropyrano[2,3]pyrazole compounds using acidic ionic liquid 3-methyl-1-sulfonic acid imidazolium chloride ([Msim]Cl) as catalyst and green solvent
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نویسنده
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Pouramiri B. ,Tavakolinejad Kermani E.
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منبع
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scientia iranica - 2016 - دوره : 23 - شماره : 3-C - صفحه:1095 -1101
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چکیده
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A new, efficient, and environmentally benign protocol for the one-pot, fourcomponent synthesis of dihydropyrano[2,3-c]pyrazoles by condensation of ethylacetoacetate, hydrazine hydrate, aromatic aldehyde, and malononitrile catalyzed by 3-methyl-1-sulfonic acid imidazolium chloride ([msim]cl) as an ecofriendly catalyst with high catalytic activity and reusability at 30°c under solvent-free conditions is reported. the reactions proceed to be completed within 5-15 min in 87-97% yield.
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کلیدواژه
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Multi-Component Reaction (MCR); Pyrano[2 ,3-c]pyrazole; Green chemistry; Ionic liquid; Heterocycle
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آدرس
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shahid bahonar university of kerman, Faculty of Science, Department of Chemistry, ایران, shahid bahonar university of kerman, Faculty of Science, Department of Chemistry, ایران
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Authors
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