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:
Jul. 02, 2013
Filed:
Oct. 26, 2010
Alexander Korte, Sao Paulo, BR;
Paul Hornung, Ruessingen, DE;
Alexander Korte, Sao Paulo, BR;
Paul Hornung, Ruessingen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention relates to a novel process for the preparation of a compound of formula (I), wherein R, R, R, Rand Rare each independently selected from hydrogen, halogen, C-C-alkyl, C-C-haloalkyl, C-C-alkoxy, C-C-haloalkoxy, nitro, cyano, and pentafluorothio; Ris C-C-alkyl, or C-C-haloalkyl; by oxidation of a compound of formula (II) with an oxidation agent selected from trifluoroperacetic acid and trichloroperacetic acid in the presence of a catalyst selected from hydroxides, oxides, sulfates, acetates or trifluoroacetates of lithium, magnesium, calcium, strontium, barium, titanium (IV), zinc (II) and manganese (II).