4-Bromophenyl isothiocyanate → 1-(p-Bromophenyl)-3-(3,4-dihydro-4-oxo-3-quinazolinyl)-2-thiourea
Reaktionsgleichung
[Br:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]=[C:9]=[S:10])=[CH:4][CH:3]=1.[NH2:11][N:12]1[C:21](=[O:22])[C:20]2[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=2)[N:14]=[CH:13]1>ClCCCl>[Br:1][C:2]1[CH:7]=[CH:6][C:5]([NH:8][C:9]([NH:11][N:12]2[C:21](=[O:22])[C:20]3[C:15](=[CH:16][CH:17]=[CH:18][CH:19]=3)[N:14]=[CH:13]2)=[S:10])=[CH:4][CH:3]=1Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
4-Bromophenyl isothiocyanate (2.51 g, 11.72 mmol) is added to a mixture of 3-amino-4(3H)quinazolinone (1.72 g, 10.66 mmol) in a 1,2-dichloroethane at reflux under a nitrogen atmosphere. The reaction mixture is heated at reflux for 2 days, cooled, washed with ether and filtered. The filter cake is dried to give the title product as a white solid, 2.44 g, mp 189°-190° C.