| abstract |
The present invention relates to a process for preparing fluorine-containing compounds by reacting a compound which contains fluorine-exchangeable halogen with a fluoride or a mixture of fluorides with the formula Iin which Me is an alkaline earth metal ion, NH4+-ion or alkali metal ion, in the presence of a compound or a mixture of compounds of the formula (II)in which A1, A2, A3, A4, A5, A6, A7, A8 independently of one another are identical or different and are a straight-chain or branched alkyl or alkenyl having 1 to 12 carbon atoms, cycloalkyl having 4 to 8 carbon atoms, an aryl having 6 to 12 carbon atoms, or an aralkyl having 7 to 12 carbon atoms, or A1 A2, A3A4, A5A6, and A7A8 independently of one another are identical or different and are connected to one another directly or by way of O or N-A9 to form a ring having 3 to 7 ring members, A9 is an alkyl having 1 to 4 carbon atoms and B- is a monovalent acid radical or the equivalent of a polyvalent acid radical, in the presence or absence of a solvent at a temperature from 40 to 260° C. |