Preparation of 1,4-dichlorobenzene

Details Preparation of 1,4-dichlorobenzene Preparation of 1,4-dichlorobenzene

C - Chemistry, Metallurgy

07

C

252/116, 252/56,

C07C 25/08 (2006.01) C07C 17/12 (2006.01) C07C 17/358 (2006.01)

Patent

CA 1294267

ABSTRACT 1,2-dichlorobenzene is isomerized to 1,4-dichlorobenzene in the presence of a catalyst comprising ta) at least one of AlCl3 and AlBr3 and (b) free iodine and, optionally, (c) at least one of alkaline earth metal halides and sulfates and lanthanide halides. A composition of matter comprising (a) at least one of AlCl3 and AlBr3, (b) free iodine and (c) at least one of alkaline earth metal halides, alkaline earth metal sulfates and lanthanide halides is provided.

533949

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