反应详情

p-Chloroiodobenzene (14 g), p-chloroaniline (11.23 g), potassium carbonate (12.15 g), and cuprous chloride (1.16 g) were suspended in dimethylsulfoxide (15 ml), and heated with stirring at 180°-190° C. for 3 hours and 40 minutes. After cooling the reaction mixture, ethyl acetate was added thereto, and washed with conc. aqueous ammonia 2 times, and with aqueous sodium chloride solution 3 times, and then, the mixture was concentrated under reduced pressure. The resulting residue was subjected to column chromatography on silica gel and eluted with a mixed solvent of chloroform/n-hexane [1:2 (v/v)] to give 4,4'-dichlorodiphenylamine (4.89 g).

1. temperatureheated
2. additionwas added
3. washwashed with conc. aqueous ammonia 2 times
4. concentrationwith aqueous sodium chloride solution 3 times, and then, the mixture was concentrated under reduced pressure
5. washeluted with a mixed solvent of chloroform/n-hexane [1:2 (v/v)]