Dehydrohalogenation of (polyhaloalkyl) benzenes with support...

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

C - Chemistry, Metallurgy

07

C

260/652, 260/610

C07C 25/24 (2006.01)

Patent

CA 1118454

ABSTRACT A process for the dehydrohalogenation of a (polyhaloalkyl)benzene containing a benzylic halogen such as 1,3-dichloro-5-(1,3,3,3-tetrachloro-1-methyl- propyl)benzene by contacting the (polyhaloalkyl)ben- zene with a Lewis acid such as AlCl3 deposited on an inert support such as silica gel or alumina, under conditions sufficient to catalyze said dehydrohalogen- ation to form a (polyhaloalkenyl)benzene such as 3,5- dichloro-.alpha.-(2,2,2-trichloroethyl)styrene. 27,575-F

336829

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