反应详情

2-Amino-4-chlorobenzonitrile (5.0 g, 33 mmolL), cyclohexanone (30 ml) and Zinc chloride (4.8 g, 35 mmoL) were mixed in a round bottomed flask and heated up to 120 degree Celsius for 3 hours. After cooling to room temperature, the solvent was decanted off. The resulting residue was triturated with ethyl acetate (30 ml). The solid was collected by filtration and added into 10% aqueous NaOH (50 ml). After stiring for 2 hours, the mixture was filtered and the filter cake was washed thoroughly with water. The filter cake was then extracted with methanol. The combined methanolic extract was concentrated to produce the desired product (3.8 g, 16 mmoL) in 48% yield.

1. temperatureheated up to 120 degree Celsius for 3 hours
2. customthe solvent was decanted off
3. customThe resulting residue was triturated with ethyl acetate (30 ml)
4. filtrationThe solid was collected by filtration
5. additionadded into 10% aqueous NaOH (50 ml)
6. filtrationthe mixture was filtered
7. washthe filter cake was washed thoroughly with water
8. extractionThe filter cake was then extracted with methanol
9. extractionThe combined methanolic extract
10. concentrationwas concentrated