反应详情

温度

25 °C

A solution of 3-methyl-4-chloroaniline (70 grams; 0.5 mol) in toluene (150 ml) is placed into a pressure vessel, and is cooled in an acetone-dry ice bath. Trifluoromethyl isocyanate (56 grams; 0.5 mol) is added and the pressure vessel is sealed. The reaction mixture is warmed to about 25° C. and is allowed to stand for about 24 hours. After this time the reaction vessel is opened and its contents are stripped of toluene by evaporation under reduced pressure. The residue is then recrystallized to yield N-(3-methyl-4-chlorophenyl)-N'-trifluoromethyl urea.

1. temperatureis cooled in an acetone-dry ice bath
2. customthe pressure vessel is sealed
3. customits contents are stripped of toluene by evaporation under reduced pressure
4. customThe residue is then recrystallized