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An efficient, clean, and environmentally benign synthesis of 1,3- dihydropyrimidin-2- ones and thiones by one-pot three component reaction of substituted aromatic aldehydes, ethyl acetoacetate and urea/thiourea catalyzed by magnetic dicationic ionic liquid under solvent free conditions was described. This method provides several advantages such as environment benign, high yield, simple work up procedure and reusable catalyst. The magnetic ionic liquid could be readily separated from solution via application of an external magnet, allowing straightforward recovery and reuse.

[PBMIM](FECL4)2: AN EFFECTIVE CATALYST FOR THE ONE-POT SYNTHESIS OF 1, 3-DIHYDROPYRIMIDIN-2--ONES AND THIONES UNDER SOLVENT FREE CONDITIONS