| 摘要 |
The invention relates to a method for producing arylcarboxylic acid chlorides (I) substituted at least once by aryl (C1-C20) and/or halogen consisting, at a first stage thereof, in reacting an aromatic compound (II) substituted at least once by alkyl (C1- C20) and/or halogen with CCl4 in the presence of a Friedel-craft catalyst in such a way that corresponding trichlormethylated aromatic compounds (III) at least once substituted by aryl (C1-C20) and/or halogen are obtainable. At a second stage, the trichlormethylated aromatic compound (III) is treated with water or a proton acid in the presence of a catalyst, whereby making it possible to obtain an arylcarboxylic acid chloride (I). In the preferred embodiment, said trichlormethylated aromatic compound (III) is not isolated in the form of an intermediate product and, at the second stage used dissolved in the solvent of the first stage.
|
