反应详情

In 100 ml of chloroform, 10.4 g of N-phenyl-1,2-benzenediamine and 12.1 g of triethylamine were dissolved, and the mixture was cooled to -5° C. to 0° C., and then 13.6 g of chloroacetyl chloride was added dropwise thereto, holding the temperature of the mixture at not higher than 20° C. The reaction nearly went to completion when the addition was finished. After stirring for further 30 minutes, the reaction mixture was diluted with 50 ml of water. The organic layer was separated, washed with water, dried over anhydrous magnesium sulfate and then the solvent is evaporated under reduced pressure. The resulting solid was recrystallized from ethanol to give 15.6 g of crystals having a melting point of 112° C. to 113° C. Yield: 60.0%.

1. temperaturethe mixture was cooled to -5° C. to 0° C.
2. customhigher than 20° C
3. customThe reaction
4. additionthe addition
5. customThe organic layer was separated
6. washwashed with water
7. dry with materialdried over anhydrous magnesium sulfate
8. customthe solvent is evaporated under reduced pressure
9. customThe resulting solid was recrystallized from ethanol