Chinese Journal of Catalysis ›› 2007, Vol. 28 ›› Issue (7): 591-595.

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Efficient Synthesis of3,4-Dihydropyrimidin-2(1H)-one Using Metal Hydrogen Sulfates M(HSO4)n as Catalyst under Solvent-Free Conditions

Khodabakhsh NIKNAM1, Mohammad Ali ZOLFIGOL2, Zahra HOSSIENINEJAD2, Nader DANESHVAR2   

  1. 1 Chemistry Department, Faculty of Sciences, Persian Gulf University, Bushehr 75169, Iran; 2 College of Chemistry, Bu-Ali Sina University, Hamadan 65174, Iran
  • Received:2007-07-25 Online:2007-07-25 Published:2011-07-25

Abstract: Metal hydrogen sulfates M(HSO4)n(Ca(HSO4)2, Zn(HSO4)2, and oxone) were used to catalyze one-pot three-component condensation reactions of aldehydes,1,3-dicarbonyl compounds, and urea at 90 ℃ under solvent-free conditions to give3,4-dihydropyrimidin-2(1H)-one in high yields.

Key words: metal hydrogen sulfate, Biginelli reaction, dihydropyrimidinone, solvent-free, calcium hydrogen sulfate, zinc hydrogen sulfate, oxone