| abstract |
A process for the preparation of fluorobenzenes of the formula I <IMAGE> (I) wherein R1, R2 and R3 are equal or different and represent H, F, Cl or alkyl having from 1 to 3 carbon atoms, at least one of these radicals being fluorine, and S1 and S2 being equal or different and represent H or a group reducing the electron density at the benzene nucleus, which comprises subjecting a compound of the formula II <IMAGE> (II) in which R1, R2, R3, S1 and S2 have the aforementioned meaning to a decarbonylation at a zeolite catalyst. |