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|Title:||Synthesis of some substituted 2-oxo- 1,2,3,4-tetrahydropyrimidines (3,4-dihydropyrimidin-2(1H )-ones) and 2-thioxo-1,2,3,4-tetrahydropyrimidines, catalyzed by tin(II) chloride dihydrate and tin (II) iodide under microwave irradiation|
|Authors:||Roy, Dipak K|
tin(II) chloride dihydrate
|Series/Report no.:||Int.Cl.7 C 07 D|
|Abstract:||A simple,economic and efficient one pot synthesis of some sub s tituted 2-o xo-1,2,3,4-t etrahydropyr imid ines [3, 4- dihydropyrimidin-2(1H )-ones) and 2-thioxo-1,2,3,4-tetrahydropyrimidines under solvent free condition and microwave irradiation catalyzed by tin(II) chloride dihydrate and tin (II) i ide is described. Aromatic aldehydes, possessing either electron donating or electron withdrawing substituents, react efficiently with urea (or thiourea) and -dicarbonyl compounds to give excellent yield of sub s tituted 3,4-dihydro pyrimidin-2 (1H )-ones (o r 3, 4-dihydropyrimidin-2(1H )-thiones].|
|Appears in Collections:||IJC-B Vol.45B(04) [April 2006]|
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