Nano-Silica phosphoric acid: an efficient catalyst for one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones (thiones) under solvent-free or sonication conditions

Iranian Journal of Catalysis

مقاله 3، دوره 2، شماره 1، فروردین 2012، صفحه 17-21   

نویسندگان

Abdolhamid Bamoniri^{* 1}؛ Bi Bi Fatemeh Mirjalili²؛ Sedigheh Nazemian²

¹Department of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, I.R.Iran.

²Department of Chemistry, College of Science, Yazd University, I. R. Iran .

چکیده

Two simple protocols for the synthesis of three-component condensation reaction of an aldehyde, β-ketoester and urea or thiourea to obtain the 3, 4-dihydropyrimidin-2(1H)-ones (thiones) using nano silica phosphoric acid are reported. Short reaction times, high yields, reusability of catalyst and easy workup are some advantages of these protocols.

کلیدواژه‌ها

Biginelli reaction؛ 3؛ 4-Dihydropyrimidin-2(1H)-ones؛ 4-Dihydropyrimidin-2(1H)-thiones؛ Heterogeneous catalyst؛ Multi-component reactions؛ Nano silica phosphoric acid؛ Sonication condition

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