%0 Journal Article %T Pyridinium Trifluoro Acetate Mediated Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones and Tetrazolo[1,5-a]pyrimidine-6-carboxylates %A Chandran Raju %A Madhaiyan Kalaipriy %A R. Uma %A Radhakrishnan Sridhar %J Current Chemistry Letters %D 2012 %I Growing Science %X A simple and economic synthesis of 3,4-dihydropyrimidin-2(1H)-ones using pyridinium triflate as catalyst under microwave condition was attempted with an easy work-up protocol. Further tetrazolo [1,5-a] pyrimidine-6-carboxylates were synthesized by three-component coupling reaction of ¦Â-ketoesters with a mixture of aromatic aldehyde and 5-aminotetrazole. The products were well characterized with IR, NMR (1H and 13C NMR) and mass spectrometry. %K Dihydropyrimidinones %K Tetrazolopyrimidines %K Pyridinium Trifluoroacetate %K Microwave Irradiation %U http://www.growingscience.com/ccl/Vol1/ccl_2012_4.pdf