C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 65/24 (2006.01) C07C 51/02 (2006.01)
Patent
CA 2281828
The invention relates to a method for isolating 3-[2-chloro-4- (trifluoromethyl)-phenoxy]-benzoic acid of the formula (I) from an aqueous solution of its metallic salt, by a) reacting the metallic salt of the 3-[2- chloro-4-(trifluoromethyl)-phenoxy]-benzoic acid with an organic or inorganic acid; b) heating the reaction mixture until a liquid two-phase system has formed comprising an organic and aqueous phase; and c) separating the organic phase from the aqueous phase.
Procédé permettant d'isoler de l'acide 3-[2-chloro-4(trifluorométhyl)-phénoxy]-benzoïque de formule (I) d'une solution aqueuse de son sel métallique, selon lequel (a) on met en réaction l'acide 3-[2-chloro-4-(trifluorométhyl)-phénoxy]-benzoïque avec un acide organique ou inorganique, (b) on chauffe le mélange de réaction jusqu'à la formation d'un système liquide à deux phases comportant une phase organique et une phase aqueuse et (c) on sépare la phase organique de la phase aqueuse.
Eva Ronald R.
Franke Dirk
Jones Simon A.
Mattmann Wolfgang
Merkle Hans Rupert
Basf Aktiengesellschaft
Robic
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