反应详情

5-[2-(p-Toluenesulfonyloxy)ethoxy]-7-fluoro-1-[2-methoxy-4-(2-methylbenzoylamino)benzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.4 g), N-methylpiperazine (0.38 ml) and sodium iodide (0.3 g) are dispersed in dimethylformamide (10 ml), and the mixture is stirred at room temperature for 3 days. The reaction mixture is concentrated, and thereto is added water. The mixture is extracted with ethyl acetate, and the extract is dried over sodium carbonate, and purified by silica gel column chromatography (eluent; dichloromethane:methanol=10:1) to give 5-[2-(4-methyl-1-piperazinyl)-ethoxy]-7-fluoro-1-[2-methoxy-4-(2-methylbenzoylamino)benzoyl]-2,3,4,5-tetrahydro-1H-benzazepine (0.15 g) as colorless amorphous.

1. concentrationThe reaction mixture is concentrated
2. additionis added water
3. extractionThe mixture is extracted with ethyl acetate
4. dry with materialthe extract is dried over sodium carbonate
5. custompurified by silica gel column chromatography (eluent; dichloromethane:methanol=10:1)