反应详情

2.13 g (0.01 mol) of 3-(3,5-dichlorophenyl)pyrazole are dissolved, at room temperature and with stirring, in 50 ml of dichloromethane. 2.5 g (0.011 mol) of n-iodosuccinimide are then added and stirring is then continued for 4 days. The reaction mixture is then concentrated, the solid obtained is washed with heptane and boiled in 100 ml of 1N sodium hydroxide. After cooling, the solid is filtered, washed with water and dried to give 2 g (yield 59%, melting point: 170° C.) of 4-iodo-3-(3,5-dichlorophenyl)pyrazole.

1. concentrationThe reaction mixture is then concentrated
2. customthe solid obtained
3. washis washed with heptane
4. temperatureAfter cooling
5. filtrationthe solid is filtered
6. washwashed with water
7. customdried