Process for the preparation of halogenated aromatic compounds

Details Process for the preparation of halogenated aromatic compounds Process for the preparation of halogenated aromatic compounds

1993-07-02

1995-05-30

Evans, Joseph E.

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

Organic compounds

Halogen containing

568314, 568634, 568656, 570201, C07C 17361, C07C 2502, C07C 25125, C07C 2513

Patent

active

054203643

ABSTRACT:
Halogenated aromatic compounds are prepared by passing esters of halogenoformic acid at temperatures in the range 150.degree. to 600.degree. C. and pressures from 0.1 to 3 bar over a catalyst containing chromium, magnesium, iron, silicon and/or aluminium, wherein if Al.sub.2 O.sub.3 catalysts are used these have been activated with hydrogen halide.

REFERENCES:
patent: 3087974 (1963-04-01), Hauptschein et al.
patent: 3283018 (1966-11-01), Christe et al.
patent: 3787331 (1974-01-01), Groppelli et al.
patent: 3793229 (1974-02-01), Groppelli et al.
patent: 4714785 (1987-12-01), Manner
patent: 4745235 (1988-05-01), Ashton et al.
patent: 5026930 (1991-06-01), Manzer et al.
patent: 5051537 (1991-09-01), Manzer

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