Catalyst for dehydrohalogenation

Details Catalyst for dehydrohalogenation Catalyst for dehydrohalogenation

1984-09-14

1989-12-12

Lone, Werren B.

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

Organic compounds

Halogen containing

570200, 570204, C07C 1734

Patent

active

048869228

ABSTRACT:
A method for preparing an .alpha.-substituted styrene such as 2-(3,5-dichlorophenyl)-4,4,4-trichloro-1-butene comprising contacting, an .alpha.-haloalkylbenzene such as 3-(3,5-dichlorophenyl)-1,1,1,3-tetrachlorobutane with a catalyst consisting essentially of .gamma.-alumina dried to a moisture content between about zero to about 12% by weight, the .gamma.-alumina serving to catalyze the dehydrohalogenation of the .alpha.-haloalkylbenzene to produce the .alpha.-substituted styrene.

REFERENCES:
patent: 2518409 (1950-08-01), Williamson
patent: 2746842 (1956-05-01), Block et al.
patent: 2778861 (1957-01-01), Kundiger et al.
patent: 3141896 (1964-07-01), Stein
patent: 3299152 (1967-01-01), Inaba et al.
patent: 3773691 (1973-11-01), Leach
patent: 4205015 (1980-05-01), Wang et al.
patent: 4287089 (1981-09-01), Convers et al.

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