Process for the preparation of meta-halogenoanilines

Details Process for the preparation of meta-halogenoanilines Process for the preparation of meta-halogenoanilines

1983-01-31

1985-01-22

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C 8500, C07C 8524

Patent

active

044953682

ABSTRACT:
Process for the preparation of anilines substituted in the meta-position by a halogen atom.
An aniline of the formula: ##STR1## in which: X' and X", R', R" and R"' are a halogen atom, alkyl (C.sub.1 -C.sub.4) or alkoxy (C.sub.1 -C.sub.4), one of the symbols X and one of the symbols R necessarily being a halogen and it being possible for one of the symbols X and one of the symbols R to be a hydrogen atom,
is subjected to catalytic hydrogenation, in an anhydrous organic liquid phase, namely a chlorobenzene phase, in the presence of a halogen-containing hydracid and of a noble metal from group VIII of the periodic classification.

REFERENCES:
patent: 4206147 (1980-06-01), Daumes et al.
patent: 4206148 (1980-06-01), Biola et al.
patent: 4324914 (1982-04-01), Cordier
patent: 4340759 (1982-07-01), Cordier
patent: 4351959 (1982-09-01), Cordier

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