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:
May. 10, 2011
Filed:
Aug. 22, 2007
Applicants:
Sergi Pazenok, Solingen, DE;
Lui Norbert, Odenthal, DE;
Arnd Neeff, Enneptal, DE;
Inventors:
Assignee:
Bayer CropScience AG, Monheim, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 231/10 (2006.01); C07C 229/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to a process for preparing 3-dihalomethylpyrazole-4-carboxylic acid derivatives of the formula (I) by reacting α-fluoroamines of the formula (III) in the presence of Lewis acids with acrylic acid derivatives of the formula (II) to give vinamidinium salts of the formula (IV) and the subsequent reaction thereof with hydrazines, and to the vinamidinium salts of the formula (IV) themselves.