Process for the preparation of halogen-containing aromatic...

Details Process for the preparation of halogen-containing aromatic... Process for the preparation of halogen-containing aromatic...

C - Chemistry, Metallurgy

07

C

260/577, 260/643

C07C 49/813 (2006.01) C07C 45/46 (2006.01) C07C 45/47 (2006.01) C07C 49/84 (2006.01) C07C 315/04 (2006.01)

Patent

CA 1310978

Abstract A process for the preparation of halogen-containing aromatic compounds of the formula I Image (I) , wherein Hal represents halogen, R represents H, C1-C3-alkyl, phenyl, halogen or trifluoro- methyl, Y represents CO or SO2 and Z represents an aromatic or heteroaromatic group, and Y-Z-Y together may also be CO or SO2, which comprises reacting a haloaromatic compound of the formula RC6H4Hal (II) with a halide of a bisacid having the formula Hal-Y-Z-Y-Hal (III) in a molar ratio of at least 2:1 in the presence of hydrogen fluoride and of boron trifluoride, in formulae II and III Hal, R, Y and Z having the aforementioned meaning.

592459

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