反应详情

Into a 50 mL flask equipped with a stirrer were placed 16.08 g (50 mmol) of 4-trichloromethyl(pentafluorosulfanylbenzene) prepared in Example 1 and 406 mg (5 mol %) of FeCl3. The bath was heated to 70° C. to 75° C., and 900 mg (50 mmol) of water was added dropwise over at least 2 hours. HCl gas was generated during the addition. After the addition was complete, the mixture was heated with stirring for 1 hour. This mixture was distilled under reduced pressure to yield 5.59 g of 4-pentafluorosulfanylbenzoic chloride (product yield: 42%).

1. customInto a 50 mL flask equipped with a stirrer
2. temperatureThe bath was heated to 70° C. to 75° C.
3. additionAfter the addition
4. temperaturethe mixture was heated
5. distillationThis mixture was distilled under reduced pressure