| abstract |
(57) Abstract: A method for producing a fluorinated aromatic compound with a good yield and high selectivity, which is suitable for industrial use, has minimal environmental pollution, and is a simple means. To provide a method that can be implemented inexpensively. A fluorinated aromatic compound of formula I (Wherein X, Y and Z have the meanings given in the specification), the aromatic compound of formula II (Where X, Y and Z have the meanings given in formula I) It is known to produce by reacting fluorine with fluorine in a reaction medium. According to the invention, direct fluorination is carried out by means of a polyfluoroalkanesulfonic acid of formula III CF n H 3-n (CFY) m —SO 3 H (III) (where m, n and Y have the meanings given in the description). In a reaction medium containing This may particularly advantageously provide a modification of the known process in a way that is not readily predictable, not only in terms of selectivity and yield, but also in terms of the quality of the product obtained by this process. The fluorinated aromatic compounds of formula I are intermediates for the synthesis of effective compounds. |