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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
Bordoloi, Manobjyoti
Keywords: Tetrahydropyrimidines;dihydropyrimidinones;tin(II) chloride dihydrate;microwave irradiation
Issue Date: Apr-2006
Publisher: NISCAIR-CSIR, India
IPC Code: 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].
Page(s): 1067-1071
ISSN: 0975-0983(Online); 0376-4699(Print)
Appears in Collections:IJC-B Vol.45B(04) [April 2006]

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