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:
Mar. 16, 1999
Filed:
Oct. 03, 1997
Bruce C Hamper, Kirkwood, MO (US);
Michael K Mao, Chesterfield, MO (US);
Wendell Gary Phillips, Wildwood, MO (US);
Monsanto Company, St. Louis, MO (US);
Abstract
Processes for preparing substituted 3-aryl-5-haloalkyl-pyrazoles and, specifically, for preparing C.sub.1-5 alkyl esters of 5-�1-(C.sub.1-5 alkyl)-4-halo-5-(C.sub.1-3 haloalkyl)-1H-pyrazole-3-yl!-2,4-dihalo-benzoic acids such as isopropyl 5-�4-bromo-1-methyl-5-(trifluoromethyl)-1H-pyrazole-3-yl!-2-chloro-4-fluor obenzoate, are presented. The described processes include novel approaches for forming phenyldiketones, forming and alkylating pyrazoles, brominating heterocyclic compounds, oxidizing alkyl-substituted benzene compounds, and esterifying carboxylic acids. These processes may be combined to prepare 3-aryl-5-haloalkyl pyrazoles, or alternatively, used in subcombinations or individually to prepare intermediates or other useful compounds.