Process for the preparation of meta-halogenoanilines
US4495368A · kind A · utility
2Cited by
5References
26Claims
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Inventor
Key dates
| Filing date | Jan 31, 1983 |
| Grant date | Jan 22, 1985 |
| Priority date | — |
| Expiry date | Jan 31, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/74
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
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