反应详情

温度

140 °C

Palladium on carbon (10%, 300 mg), aqueous sodium hydroxide solution (35% strength, 26.5 g, 232 mmol, 3.7 equivalents), 62 g of water and 1,3,5-trichloro-2,4,6-trifluorobenzene (15 g, 62 mmol) were placed in a pressure vessel. After flushing with nitrogen, the pressure vessel was heated to 140° C. and pressurized with 30 bar of hydrogen. A hydrogen pressure of 30 bar was maintained at 140° C. for 12 hours. After cooling to 20-25° C., the pressure vessel was depressurized. The reaction solution was subjected to an azeotropic distillation via a distillation attachment; the distillate went over at a temperature of 99.5° C. After separation of the phases, the lower organic phase comprised the title compound. Washing with water and drying gave 8.05 g of 1,3,5-trifluorobenzene (98% of theory).

1. customAfter flushing with nitrogen
2. temperatureA hydrogen pressure of 30 bar was maintained at 140° C. for 12 hours
3. temperatureAfter cooling to 20-25° C.
4. distillationThe reaction solution was subjected to an azeotropic distillation via a distillation attachment
5. customwent over at a temperature of 99.5° C
6. customAfter separation of the phases
7. washWashing with water
8. customdrying