01071nas a2200193   4500008004100000022001400041245014100055210006900196260008600265300001800351490000700369520025000376653002300626653002200649653003700671100001900708700001900727856013100746       2009                        eng d  a0039-791100aYttria-zirconia-based lewis acid catalysis of the biginelli reaction: an efficient one-pot synthesis of 3,4-dihydropyrimidin-2-(1H)-ones0 aYttriazirconiabased lewis acid catalysis of the biginelli reacti  a325 CHESTNUT ST, SUITE 800, PHILADELPHIA, PA 19106 USAbTAYLOR & FRANCIS INCcMAR  aPII 9092393990 v393 a<p>Yttria-zirconia-based Lewis acid efficiently catalyzes the three-component cyclocondensation reaction of aldehyde, -keto ester, and urea or thiourea in refluxing acetonitrile to produce the corresponding dihydropyrimidones in high yields.</p>10aBiginelli reaction10adihydropyrimidone10ayttria-zirconia-based Lewis acid1 aRamalingam, S.1 aKumar, Pradeep  uhttps://library.ncl.res.in/content/yttria-zirconia-based-lewis-acid-catalysis-biginelli-reaction-efficient-one-pot-synthesis-0