Title:
MANUFACTURE OF 4*55DICHLOROO22*44 CHLOROPHENOXY*PHENOL
Document Type and Number:
Japanese Patent JPS5573625
Kind Code:
A
Abstract:
A process for the manufacture of 4,5-dichloro-2-(4-chlorophenoxy)phenol by selective chlorination of 2-phenoxyanisole with 3 to 5 molar equivalents of chlorine, in the temperature range between -10 DEG and +50 DEG C., preferably between 0 DEG and 30 DEG C., in a lower halogenated aliphatic hydrocarbon, a lower aliphatic nitrile, in dimethyl formamide, dimethylmethanephosphonate or methanol, preferably in dimethyl formamide, dimethylmethanephosphonate, methanol, acetonitrile, propionitrile, chloroform, methylene chloride, 1,2-dichloroethane or tetrachloroethane, and demethylation of the 4,5-dichloro-2-(4-chlorophenoxy)anisole obtained as intermediate with an acid.
Inventors:
KURAUSU DEE BUAISU
Application Number:
JP15012179A
Publication Date:
June 03, 1980
Filing Date:
November 21, 1979
Export Citation:
Assignee:
CIBA GEIGY AG
International Classes:
C07C41/00; C07C41/22; C07C41/26; C07C43/295; C07C67/00; (IPC1-7): C07C41/18; C07C43/295