P-Anisidine → N-(4-methoxyphenyl)pyridin-4-amine
反応式
Cl.Cl[C:3]1[CH:8]=[CH:7][N:6]=[CH:5][CH:4]=1.[CH3:9][O:10][C:11]1[CH:17]=[CH:16][C:14]([NH2:15])=[CH:13][CH:12]=1>ClCCl>[N:6]1[CH:7]=[CH:8][C:3]([NH:15][C:14]2[CH:16]=[CH:17][C:11]([O:10][CH3:9])=[CH:12][CH:13]=2)=[CH:4][CH:5]=1参加物
4
反応条件
- 温度
- 140 °C
実験手順
A stirred mixture of 4-chloropyridine hydrochloride (2 g) and 4-methoxyaniline (4.9 g) was heated at 140° C. for 5 hours. After cooling the residue was dissolved in dichloromethane (250 ml), the solution extracted with water (2×100 ml). The aqueous extracts were treated with sodium hydroxide solution and then extracted with ethyl acetate (4×100 ml). The combined organic extracts were washed with water, and saturated sodium chloride solution, then dried and the solvent evaporated. Purification by flash chromatography on silica, eluting with 10% v/v methanol/dichloromethane gave 4-(4-pyridylamino)-methoxybenzene, 2 g, as a fawn solid: m.p. 159°-160° C.; NMR (d6DMSO) δ8.47 (1H, s), 8.09 (2H, d), 7.10 (2H, d), 6.92 (2H, d), 6.70 (2H, dd), 3.73 (3H, s); m/e 201 (M+H)+ ; calculated for C12H12 N2O3 : C, 72.0; H, 6.0; N, 14.0. found: C, 71.4; H, 6.1; N, 13.8%.