Process for preparation of anilines substituted by chlorine in the meta-position

Claim 1

A process for the preparation of anilines substituted in the meta-position by chlorine, by the catalytic hydrogenation of chlorine-substituted nitrogen-containing benzene derivatives, in the liquid phase, in an acid medium, under the action of heat, under pressure and in the presence of noble metals from group VIII of the periodic classification, in which process the benzene derivatives have the formula: ##STR2## in which Y represents the hydrogen atom or the oxygen atom, X' and X", which are identical or different from one another, each represent a chlorine atom or an optionally substituted alkyl, aryl, aralkyl, alkoxy or aralkoxy radical, it being furthermore possible for one of the symbols X' and X" to be hydrogen, and R', R" and R"', which are identical or different from one another, each represent a chlorine atom or an optionally substituted alkyl, aralkyl, alkoxy or aryloxy radical, at least one of these three symbols representing the chlorine atom and it being furthermore possible for at most two of the symbols R', R" and R"' to be hydrogen, and the reaction is carried out in the presence of chloride ions in an amount which is such that the ratio of the concentrations [Cl - ]/[H + ] is greater than 1.5.