| abstract |
Production of 2-aryloxy-2-halogenopropionic acid compounds by reacting 2-aryloxypropionic acid compounds with N-halocarboximides in the presence of aliphatic halocarboximides in the presence of aliphatic halohydrocarbons as solvents, from 0.0001 to 0.001 mol halogen, based on starting material III, and from 0.005 to 0.05 percent by weight of water, based on the amount by weight of starting material III, and 0.0005 mol to 0.005 mol of azo-bis-isobutyronitrile and / or dibenzoyl peroxide, based on starting material III.n n n The end products which can be produced by the process of the invention are valuable starting materials for the production of pharmaceuticals, crop protection agents and dyes. |