Acetonitrile → HCID 58424053, Verbindung
Reaktionsgleichung
[Br:1][C:2]1[CH:3]=[C:4]2[C:11]3([C:15](=[O:16])[NH:14][C:13](=[S:17])[NH:12]3)[CH2:10][CH:9]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[O:8][C:5]2=[CH:6][CH:7]=1.[C:24]([O-])([O-])=O.[K+].[K+].[CH2:30](Br)[CH2:31][CH3:32].[CH3:34][C:35]#N>>[Br:1][C:2]1[CH:3]=[C:4]2[C@:11]3([C:15](=[O:16])[N:14]([CH2:30][CH2:31][CH3:32])[C:13]([S:17][CH2:24][CH2:35][CH3:34])=[N:12]3)[CH2:10][C@H:9]([C:18]3[CH:19]=[CH:20][CH:21]=[CH:22][CH:23]=3)[O:8][C:5]2=[CH:6][CH:7]=1Komponenten
5
Versuchsvorschrift
To a mixture of 6-bromo-2-phenyl-2′-thioxospiro[chroman-4,4′-imidazolidin]-5′-one (131 mg, 0.34 mmol) and K2CO3 (186 mg, 1.35 mmol) in CH3CN (5 mL) was added PrBr (166 mg, 1.35 mmol). The reaction mixture was refluxed for 2 h. The mixture was filtered, and the filtrate was concentrated to give a residue, which was purified by preparative TLC to give (2R,4S)-6-bromo-2-phenyl-1′-propyl-2′-(propylthio)spiro[chroman-4,4′-imidazol]-5′(1′H)-one (75 mg, 47%).