Microwave enhanced, solvent free green protocol for the production of 3,4-dihydropyrimidine-2-(1<i style="">H</i>)-ones using AlCl<sub>3</sub>.6H<sub>2</sub>O as a catalyst
360-3633,4-Dihydropyrimidine-2-(1H)-ones are synthesized via a
multicomponent reaction of aldehyde, urea or thiourea and 1,3-dicarbonyl
compounds using microwave irradiation catalyzed by 10 mol% AlCl3.6H2O
under solvent-free conditions. The catalyst being reported here is cheap, safe
to handle and the whole procedure is eco-friendly