Process for producing a halobenzene

Details Process for producing a halobenzene Process for producing a halobenzene

1987-06-09

1989-05-16

Lone, Werren B.

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

Organic compounds

Halogen containing

570206, 570207, C07C 1712

Patent

active

048311995

ABSTRACT:
A process for producing a halobenzene represented by the formula: ##STR1## where R is a lower alkyl group, a lower alkoxy group or a halogen atom, and X is a halogen atom, which comprises halogenating a benzene represented by the formula: ##STR2## where R is as defined above, in a liquid phase in the presence of a catalyst, characterized in that the catalyst is a combination of an aliphatic carboxylic acid component and a zeolite having a SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio of from 3 to 8 and a pore size of from 6 to 10 .ANG..

REFERENCES:
patent: 3622640 (1982-04-01), Taylor et al.
patent: 3687839 (1972-08-01), Jenkins
patent: 4327036 (1982-04-01), Marsh
patent: 4518808 (1985-05-01), Wang et al.
Solvent Effects in the Bromination of Neopentylbenzene, t-Butylbenzene, Toluene & Benzene in Aqueous Trifluoroacetic Acid by Schubert & Gurka, JACS 91, 1443-1451 (1969).
Relative Rates & Isomer Distributions in the Halogenation of t-Butylbenzene & Some of Its Derivatives. Partial Rate Factors for Non-Catalytic Bromination and Chlorination in Acetic Acid by Stock & Brown, JACS 81, 5615-5620 (1959).
D. W. Breck, "Zeolite Molecular Sieves", John Wiley, New York, 1974 (i) pp. 502-503 Reaction with Strong Acids, (ii) p. 569 Hydrogen Exchange in Zeolites.
J. van Dijk, J. J. van Daalen and G. B. Pausle, Recueil, 93, 72 (1974).
Kagaku Kogyo (Chemical Industry) 1983, p. 991.
The Journal of Organic Synthetic Chemistry Society 40 (10), 954, (1982).
Patent Abstracts of Japan, Unexamined Applications, Field C, vol. 7, No. 175, Aug. 3, 1983, p. 134 C 179.

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