反应详情

温度

20 °C

The experiment is carried out as in Example 1, starting with 2-(3-chloropropyl)naphtho[1,8-cd]isothiazole 1,1-dioxide (6.3 g), 4-(3-indolyl)piperidine (4.5 g) and sodium bicarbonate (1.9 g) in a mixture cf dimethylformamide (100 cc) and tetrahydrofuran (100 cc). The mixture is heated for 5 hours at boiling point, then cooled to a temperature of about 20° C. Stirring is maintained for 15 hours at this temperature. After purification by flash-chromatography on a silica column, under a current of argon at medium pressure (0.5-1.5 bar) with ethyl acetate as eluant, and recrystallization from boiling methyl ethyl ketone (60 cc), 2-{3-[4-(3-indolyl)piperidino]propyl}naphtho[1,8-cd]isothiazole 1,1-dioxide (2 g) is obtained, m.p. 162° C.

1. temperatureThe mixture is heated for 5 hours
2. temperatureis maintained for 15 hours at this temperature
3. customAfter purification by flash-chromatography on a silica column
4. customunder a current of argon at medium pressure (0.5-1.5 bar) with ethyl acetate as eluant, and recrystallization