反应详情

14.1 g (0.10 mol) of γ-chlorobutyryl chloride in 50 ml of chloroform are added dropwise in the course of 1 hour, at 10°-15° C., to a solution of 17.7 g (0.10 mol) of 1,3-diamino-4,6-dichlorobenzene and 8.7 g (0.11 mol) of pyridine in 500 ml of chloroform. The mixture is then stirred for 2 hours at room temperature, the solution is washed with water and filtered through 40 g of silica gel and the filtrate is concentrated. The resulting product is recrystallised from hexane/toluene. Yield: 13.5 g; melting point 125°-128° C.

1. washthe solution is washed with water
2. filtrationfiltered through 40 g of silica gel
3. concentrationthe filtrate is concentrated
4. customThe resulting product is recrystallised from hexane/toluene