Reinvestigation of the Synthesis of Ketanserin () and its Hydrochloride Salt () via 3-(2-Chloroethyl)-2,4-(1<i>H</i>,3<i>H</i>)-quinazolinedione () or Dihydro-5<i>H</i>-oxazole(2,3-<i>b</i>)quinazolin-5-one ()
作者:Hossein Fakhraian、Mehdi Heydary
DOI:10.1002/jhet.1897
日期:2014.1
The synthesis of ketanserin (5) and its hydrochloride salt (5.HCl) using respectively equimolar amounts of 3‐(2‐chloroethyl)‐2,4‐(1H,3H)‐quinazolinedione (2) with 4‐(parafluorobenzoyl)piperidine (3) and dihydro‐5H‐oxazole(2,3‐b)quinazolin‐5‐one (1) with hydrochloride salt of 4‐(parafluorobenzoyl)piperidine (3.HCl) is reinvestigated. The one‐pot reaction of ethyl‐2‐aminobenzoate with ethyl chloroformate