反应详情

A 2 g portion of 2-amino-4-chlorophenol was dissolved in 150 ml of ethanol, and the solution was mixed with 80 ml of carbon disulfide and 937 mg of potassium hydroxide and heated under reflux for 8 hours. The solvent was evaporated under a reduced pressure, and the residual oily mixture was mixed with 50 ml of 1 N hydrochloric acid aqueous solution and extracted with ethyl acetate. The organic layer was washed with saturated brine and dried with magnesium sulfate and then the solvent was evaporated under a reduced pressure. By recrystallizing the thus obtained mixture from ethyl acetate, the title compound (1.3 g) in light yellow color was obtained.

1. temperatureheated
2. temperatureunder reflux for 8 hours
3. customThe solvent was evaporated under a reduced pressure
4. additionthe residual oily mixture was mixed with 50 ml of 1 N hydrochloric acid aqueous solution
5. extractionextracted with ethyl acetate
6. washThe organic layer was washed with saturated brine
7. dry with materialdried with magnesium sulfate
8. customthe solvent was evaporated under a reduced pressure
9. customBy recrystallizing the thus obtained mixture from ethyl acetate