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:
Oct. 16, 2012
Filed:
Mar. 12, 2010
Maximilian Dochnahl, Mannheim, DE;
Martin Sukopp, Mannheim, DE;
Alexander Korte, Neustadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The present invention refers to a process for the preparation of pyrazole derivatives of formula (I) wherein W is nitrogen or CR, R, R, Rand Rare each independently selected from hydrogen, halogen, C-C-alkyl, C-C-haloalkyl, C-C-alkoxy, C-C-haloalkoxy, RS(O)n, nitro, cyano, and pentafluorothio; Ris hydrogen, halogen, C-C-alkyl, C-C-haloalkyl, C-C-alkoxy, C-C-haloalkoxy, RS(O)n, nitro, cyano, pentafluorothio or phenyl which is unsubstituted or substituted by 1 to 5 members of the group consisting of halogen, C-C-alkyl, C-C-haloalkyl, C-C-alkoxy, C-C-haloalkoxy, RS(O)n, nitro, cyano, and pentafluorothio which are the same or different; Ris C-C-alkyl or C-C-haloalkyl; and n is 0, 1, or 2; characterized in that hydrazines of formula (II) wherein W, R, R, R, and Rare as defined for pyrazole derivatives of formula (I), are reacted with a compound of formula (III)