Brønsted Acidic Ionic Liquid: An Efficient and Reusable Catalyst for the Multi-Component Synthesis of Dihydropyrimidinones under Solvent-Free Conditions

Journal of Chemical Reactivity and Synthesis

مقاله 1، دوره 3، شماره 1، مرداد 2013، صفحه 1-8   

نوع مقاله: Research Article

نویسندگان

Heshmatollah Alinezhad^* ؛ Neda Ghobadi

Department of Organic Chemistry, Faculty of Chemistry, University of Mazandaran, Babolsar, Iran

چکیده

An efficient and convenient procedure for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones and thiones by condensation of 1,3-dicarbonyl compounds, Aromatic and aliphatic aldehydes, and urea or thiourea in the presence of catalytic amount of Brønsted acidic ionic liquid 3-methyl-1-sulfonic acid imidazolium chloride {[Msim]Cl} under thermal solvent-free conditions reacted easily to afford the corresponding 3,4-dihydropyrimidin-2(1H)-ones and thiones. Straightforward and clean workup, short reaction time, good to excellent yields and reusability of the catalyst are the advantages of this method.

کلیدواژه‌ها

Dihydropyrimidinone؛ Ionic liquid؛ Brønsted acidic؛ reusable catalyst؛ thiourea