反应详情

温度

15 °C

To 925 g of 3,4-difluorotoluene prepared in Example 15 were added 17 g of shaving steel and 2.5 g of ferric chloride, and then chlorine gas was injected at the rate of 10.0 l/hr for 19 hours, maintaining the temperature between 15° C. The reaction mixture was washed with 10%/ aqueous sodium sulfite and water. After drying with 32 g of calcium chloride, the resultant was purified by fractional distillation to give 980 g of the desired product as a colorless liquid, collecting at temperature of 156° C.

1. washThe reaction mixture was washed with 10%/ aqueous sodium sulfite and water
2. dry with materialAfter drying with 32 g of calcium chloride
3. distillationthe resultant was purified by fractional distillation