| 摘要 |
A process for the preparation of halogen-containing aromatic compounds of the formula I (I) , wherein Hal represents halogen, R represents H, C1-C3-alkyl, phenyl, halogen or trifluoromethyl, Y represents CO or SO2 and Z represents an aromatic or heteroaromatic group, and Y-Z-Y together may also be CO or SO2, which comprises reacting a haloaromatic compound of the formula RC6H4Hal (II) with a halide of a bisacid having the formula Hal-Y-Z-Y-Hal (III) in a molar ratio of at least 2:1 in the presence of hydrogen fluoride and of boron trifluoride, in formulae II and III Hal, R, Y and Z having the aforementioned meaning. |
