EP 0000542 B1 19810715 - PROCESS FOR THE PREPARATION OF TRIFLUOROMETHYL PHENOLS
Title (en)
PROCESS FOR THE PREPARATION OF TRIFLUOROMETHYL PHENOLS
Publication
Application
Priority
DE 2733682 A 19770726
Abstract (en)
[origin: US4225731A] A process for the preparation of a trifluoromethylphenol or the corresponding alkoxy compound which comprises contacting a halogenobenzotrifluoride of the formula <IMAGE> in which X denotes halogen, R1, R2 and R3 denote hydrogen, trifluoromethyl or a substituent which promotes the replacement of X by a hydroxyl group and Y denotes hydrogen, a halogen or alkoxy, at least one of the substituents R1, R2 and R3 representing a trifluoromethyl group and at least one of them representing a substituent which promotes the replacement of the radical X by a hydroxyl group, with an excess aqueous alkali metal hydroxide in an alcoholic solution in the presence of a quaternary onium salt.
IPC 1-7
IPC 8 full level
B01J 31/00 (2006.01); C07B 61/00 (2006.01); C07C 27/00 (2006.01); C07C 39/24 (2006.01); C07C 37/02 (2006.01); C07C 67/00 (2006.01); C07C 201/00 (2006.01); C07C 201/12 (2006.01); C07C 205/26 (2006.01); C07C 205/37 (2006.01); C07C 205/59 (2006.01); C07C 205/60 (2006.01)
CPC (source: EP US)
C07C 201/12 (2013.01 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
BE CH DE FR GB NL
DOCDB simple family (publication)
EP 0000542 A1 19790207; EP 0000542 B1 19810715; DE 2733682 A1 19790208; DE 2860838 D1 19811022; DK 154949 B 19890109; DK 154949 C 19890529; DK 330178 A 19790127; IL 55209 A0 19780929; IL 55209 A 19830223; IT 1105942 B 19851111; IT 7850434 A0 19780724; JP S5424839 A 19790224; JP S6256850 B2 19871127; US 4225731 A 19800930
DOCDB simple family (application)
EP 78100436 A 19780719; DE 2733682 A 19770726; DE 2860838 T 19780719; DK 330178 A 19780725; IL 5520978 A 19780724; IT 5043478 A 19780724; JP 9004378 A 19780725; US 92447478 A 19780713