(Trifluoromethyl)benzene → Benzene, 1-bromo-3-(trifluoromethyl)-

Participants

Reaction Steps

3280 g of bromine are added to a mixture of 6046 g benzotrifluoride, 68 g FeCl3 and 2 g SiO2 at about 20° C. within ca. 2 hours. The reaction temperature is then slowly rised within ca. 7 hours to ca 40° C., 300 g water and 130 g Na2S2O3 are added and stirred for ca. 15 minutes. The phases are separated and the organic phase is destilled resulting in 4160 g bromo-benzotrifluoride (isomeric ratio 3:4=96:4) and 3290 g benzotrifluoride which is recycled.

Provenance & Evidence