Ammonia → 4-(4-(4-Pyridyl)piperazin-1-yl)phenol

Reaktionsgleichung

[N:1]1[CH:6]=[CH:5][C:4]([N:7]2[CH2:12][CH2:11][N:10]([C:13]3[CH:18]=[CH:17][C:16]([O:19]C)=[CH:15][CH:14]=3)[CH2:9][CH2:8]2)=[CH:3][CH:2]=1.O.N>Br>[N:1]1[CH:6]=[CH:5][C:4]([N:7]2[CH2:8][CH2:9][N:10]([C:13]3[CH:18]=[CH:17][C:16]([OH:19])=[CH:15][CH:14]=3)[CH2:11][CH2:12]2)=[CH:3][CH:2]=1

Komponenten

Versuchsvorschrift

The product from step (i) (1.5 g) in concentrated hydrobromic acid (30 ml) was heated under argon at 130°-135° C. for 21/2 hours. The solution was cooled, poured into water (150 ml) and basified with aqueous ammonia. The precipitate was filtered, washed with water and dried to give 4-[4(4-pyridyl)piperazin-1-yl]phenol (1.36 g) as a solid: m.p. 310°-312° C.; NMR(d6DMSO) δ8.2(2H,d); 6.8(4H,m); 6.66(2H,d); 3.45(4H,m); 3.08(4H,m).