S. Rozen et E. Mishani, A NOVEL METHOD FOR CONVERTING AROMATIC-ACIDS INTO TRIFLUOROMETHYL DERIVATIVES USING BRF3, Journal of the Chemical Society, Chemical Communications, (18), 1994, pp. 2081-2081
Aryltrifluoromethyl derivatives are obtained in good yields from the c
orresponding aryl carboxylic acids by reacting their dithionic esters
with BrF3 under very mild conditions.