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:
Apr. 19, 2005
Filed:
Jul. 03, 2003
Jean-louis Clavel, Ampuis, FR;
Isabelle Pelta, Chassieu, FR;
Sylvie Le Bars, Chuzelles, FR;
Philippe Charreau, Sainte Foy les Lyon, FR;
Jean-Louis Clavel, Ampuis, FR;
Isabelle Pelta, Chassieu, FR;
Sylvie Le Bars, Chuzelles, FR;
Philippe Charreau, Sainte Foy les Lyon, FR;
Abstract
A process for the preparation of a compound of formula (I)comprising oxidizing a compound of formula (II)with trifluoroperacetic acid in the presence of a corrosion inhibiting compound such as boric acid. Also, a process for preparing a compound of formula (II) by adding sulfur dioxide to a mixture of the corresponding disulfide, a formate salt, trifluoromethyl bromide and a polar solvent; and a process for preparing the disulfide comprising adding SClto a solution, in an organic solvent, of the corresponding 4-unsubstituted pyrazole.