Process for the manufacture of 4,5-dichloro...

Details Process for the manufacture of 4,5-dichloro... Process for the manufacture of 4,5-dichloro...

C - Chemistry, Metallurgy

07

C

260/619.3, 260/6

C07C 43/295 (2006.01) C07C 41/22 (2006.01) C07C 41/26 (2006.01)

Patent

CA 1142549

Case 1-12125/? Process for the manufacture of 4,5-dichloro-2-(4-chloro- phenoxy)phenol Abstract of the Disclosure A process for the manufacture of 4,5-dichloro-2-(4-chloro- phenoxy)phenol by selective chlorination of 2-phenoxyanisole with 3 to 5 molar equivalents of chlorine, in the temperature range between -10°and +50°C, preferably between 0° and 30°C, in a lower halogenated ali- phatic hydrocarbon, a lower aliphatic nitrile, in dimethyl formamide, dimethyimethanephosphonate or methanol, preferably in dimethyl forma- mide, dimethylmethanephosphonate, methanol, acetonitrile, propio- nitrile, chloroform, methylene chloride, 1,2-dichloroethane or tetra- chloroethane, and demethylation of the 4,5-dichloro-2-(4-chloro- phenoxy)anisole obtained as intermediate with an acid.

340160

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