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1. Ultrasound Assisted One-pot Synthesis of Dihydropyrimidinones Using Holmium Chloride As Catalyst

S. Kakaei; H. Sid Kalal; H. Hoveidi

Volume 26, Issue 2 , Spring 2015, , Pages 117-123

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. ...  Read More