1
1 NFCRS, Nuclear Science and Technology Research Institute, P.O. Box 11365-3486, Tehran, Islamic Republic of Iran
2
2 Graduate Faculty of Environment, University of Tehran, Tehran, Islamic Republic of Iran
Abstract
A simple and green chemical procedure was reported for the synthesis of dihydropyrimidinones from various aldehydes, ethyl acetoacetate and urea or thiourea using holmium chloride as catalyst. The reactions were performed under solvent free conditions with ultrasound irradiation as the energy source. The advantages of this protocol include the excellent yield, operational simplicity, short time and the avoidance of the use of organic solvents and friendly preparation. Products were identified by mp. and IR, NMR and Mass spectroscopies.
Kakaei,S , Sid Kalal,H and Hoveidi,H . (2015). Ultrasound Assisted One-pot Synthesis of Dihydropyrimidinones Using Holmium Chloride As Catalyst. Journal of Sciences, Islamic Republic of Iran, 26(2), 117-123.
MLA
Kakaei,S , , Sid Kalal,H , and Hoveidi,H . "Ultrasound Assisted One-pot Synthesis of Dihydropyrimidinones Using Holmium Chloride As Catalyst", Journal of Sciences, Islamic Republic of Iran, 26, 2, 2015, 117-123.
HARVARD
Kakaei S, Sid Kalal H, Hoveidi H. (2015). 'Ultrasound Assisted One-pot Synthesis of Dihydropyrimidinones Using Holmium Chloride As Catalyst', Journal of Sciences, Islamic Republic of Iran, 26(2), pp. 117-123.
CHICAGO
S Kakaei, H Sid Kalal and H Hoveidi, "Ultrasound Assisted One-pot Synthesis of Dihydropyrimidinones Using Holmium Chloride As Catalyst," Journal of Sciences, Islamic Republic of Iran, 26 2 (2015): 117-123,
VANCOUVER
Kakaei S, Sid Kalal H, Hoveidi H. Ultrasound Assisted One-pot Synthesis of Dihydropyrimidinones Using Holmium Chloride As Catalyst. J. Sci. I. R. I.. 2015;26(2):117-123.
Journal of Sciences, Islamic Republic of Iran