The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 10, 2009
Filed:
Feb. 06, 2003
Guido Mayer, Gönnheim, DE;
Oliver Cullmann, Heppenheim, DE;
Bernd Wolf, Fuβgönheim, DE;
Michael Keil, Freinsheim, DE;
Wassilios Grammenos, Ludwigshafen, DE;
Guido Mayer, Gönnheim, DE;
Oliver Cullmann, Heppenheim, DE;
Bernd Wolf, Fuβgönheim, DE;
Michael Keil, Freinsheim, DE;
Wassilios Grammenos, Ludwigshafen, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention relates to a method for producing 2-chloromethylphenyl acetic acid derivatives of formula (I), in which X represents C-Calkoxy or methylamino, by cleaving the ether bonds in compounds of formula (II), in which R represents C-Calkyl, C-Calkoxy, C-Calkyl halide, C-Calkylcarbonyl, C-Calkylcarbonyloxy, halogen, nitro or cyano, and X has the above-mentioned meaning. The inventive method is characterized in that the transformation takes place in the presence of hydrogen chloride and of an inert solvent, and in that a catalyst selected from the group comprised of: iron, indium or halogenides, oxides or triflates thereof is added to the reaction mixture.