[Cl:1][C:2]1[N:7]=[C:6]([Cl:8])[C:5]([CH:9](Br)[CH3:10])=[CH:4][N:3]=1.[CH3:12][O:13][C:14]1[CH:19]=[CH:18][C:17]([NH2:20])=[CH:16][CH:15]=1.C(=O)([O-])[O-].[K+].[K+].[I-].[K+]>C(#N)C>[Cl:1][C:2]1[N:7]=[C:6]([Cl:8])[C:5]([CH:9]([NH:20][C:17]2[CH:18]=[CH:19][C:14]([O:13][CH3:12])=[CH:15][CH:16]=2)[CH3:10])=[CH:4][N:3]=1(±)-2,4-Dichloro-5-(1-bromoethyl)-pyrimidine (1.97 g; 7.70 mmol) (from Example 1c supra) was dissolved in acetonitrile (21 mL). p-Anisidine (0.95 g; 7.70 mmol) (Aldrich), potassium carbonate (1.17 g; 8.48 mmol) and potassium iodide (0.32 g; 1.93 mmol) were added and the mixture was stirred at room temperature. After 16 hours, the mixture was partitioned between ethyl acetate and water. The organic phase was washed with water and brine, dried over anhydrous sodium sulfate, filtered and concentrated. Purification by flash chromatography (Biotage 40M, 20:80 to 25:75 ethyl acetate-hexanes gradient) gave (±)-[1-(2,4-dichloro-pyrimidin-5-yl)-ethyl]-(4-methoxy-phenyl)-amine. (Yield 1.82 g; 76.3%).
読み込み中…
