4-Bromo-2-(4-nitro-phenyl)-2H-phthalazin-1-one → 2-(4-amino-phenyl)-4-bromo-2H-phthalazin-1-one
反応式
[Br:1][C:2]1[C:11]2[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=2)[C:5](=[O:12])[N:4]([C:13]2[CH:18]=[CH:17][C:16]([N+:19]([O-])=O)=[CH:15][CH:14]=2)[N:3]=1>CCOC(C)=O.O=[Pt]=O>[NH2:19][C:16]1[CH:17]=[CH:18][C:13]([N:4]2[N:3]=[C:2]([Br:1])[C:11]3[C:6](=[CH:7][CH:8]=[CH:9][CH:10]=3)[C:5]2=[O:12])=[CH:14][CH:15]=1参加物
4
実験手順
4-Bromo-2-(4-nitro-phenyl)-2H-phthalazin-1-one (see Method B) (1.0 g, 2.9 mmol) and PtO2 (0.13 g, 0.58 mmol) were dissolved in EtOAc (40 ml) at RT. The mixture was hydrogenated at ambient pressure for 2 h, before the catalyst was filtered off to yield title compound (0.61 g, 67% yield). 1H-NMR: (400 MHz, D6-DMSO) 8.34 (1H, d), 8.07 (1H, t), 7.99 (2H, t), 7.18 (2H, d), 6.63 (2H, d), 5.35 (2H, s); MS (ESI+)=318.42 (M+H)+.