| abstract |
Compounds of the formula I <IMAGE> (I) in which A is C2-12-alkenyl, C4-8-cycloalkenyl or a grouping-C(R)=C(R')-Y and Y, R, R', R1, R2, R3 and R3' are as defined in patent claim 1, can be prepared in high yields in a simple and economical manner by reacting corresponding bromobenzenes or iodobenzenes with a compound HA in the presence of an alkali metal salt or alkaline earth metal salt of an aliphatic monocarboxylic acid having 1-12 C atoms or benzoic acid, of a cyclic or N,N-disubstituted amide as the solvent, particularly N,N-dimethylformamide, and of a palladium compound which can, if desired, contain arsenic or phosphorus, as the catalyst. |