Dehydrohalogenation of (polyhaloalkyl) benzenes with support Lew

Details Dehydrohalogenation of (polyhaloalkyl) benzenes with support Lew Dehydrohalogenation of (polyhaloalkyl) benzenes with support Lew

1978-05-18

1980-05-27

Gantz, Delbert E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260651F, C07C 2500

Patent

active

042050154

ABSTRACT:
A process for the dehydrohalogenation of a (polyhaloalkyl)benzene containing a benzylic halogen such as 1,3-dichloro-5-(2,4,4,4-tetrachlorobutyl)-benzene by contacting the (polyhaloalkyl)benzene with a Lewis acid such as AlCl.sub.3 deposited on an inert support such as silica gel or alumina under conditions sufficient to catalyze said dehydrohalogenation to form a (polyhaloalkenyl)benzene such as 3,5-dichloro-.alpha.-(2,2,2-trichloroethyl)styrene.

REFERENCES:
patent: 2404538 (1946-07-01), Schmerling et al.
patent: 2561516 (1951-07-01), Ladd et al.
patent: 2725411 (1955-11-01), Ladd et al.
patent: 2899473 (1959-04-01), LePrince et al.
patent: 3299152 (1967-01-01), Inaba et al.
patent: 3300533 (1967-01-01), Keith et al.

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