| abstract |
Process for the preparation of anilines substituted in the meta position by a halogen atom.n n n X' et X", R', R" et R''' sont un atome d'halogène, alcoyle (C 1 -C 4 ), alcoxy (C 1 -C 4 ), l'un des X et l'un des R' étant nécessairement un halogène et l'un des X et l'un des R' pouvant être un atome d'hydrogène. A catalytic hydrogenation is carried out in the anhydrous chlorobenzenic organic liquid phase in the presence of a halogenated hydracid and of a noble metal from group VIII of the periodic table, of aniline of formula: in which: X 'and X ", R', R" and R '''are a halogen, alkyl (C 1 -C 4 ), alkoxy (C 1 -C 4 ) atom, one of X and one R 'being necessarily a halogen and one of the X and one of the R' possibly being a hydrogen atom. |