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:
Sep. 11, 2012
Filed:
Nov. 23, 2006
Thomas Schmidt, Neustadt, DE;
Joachim Gebhardt, Wachenheim, DE;
Sandra Löhr, Ludwigshafen, DE;
Michael Keil, Freinsheim, DE;
Jan Hendrik Wevers, Hohensülzen, DE;
Michael Rack, Eppelheim, DE;
Guido Mayer, Gönnheim, DE;
Axel Pleschke, Mannheim, DE;
Thomas Schmidt, Neustadt, DE;
Joachim Gebhardt, Wachenheim, DE;
Sandra Löhr, Ludwigshafen, DE;
Michael Keil, Freinsheim, DE;
Jan Hendrik Wevers, Hohensülzen, DE;
Michael Rack, Eppelheim, DE;
Guido Mayer, Gönnheim, DE;
Axel Pleschke, Mannheim, DE;
BASF SE, Ludwigshafen, DE;
Abstract
The invention relates to methods for producing sulfonamides of formula I, wherein the variables have the designations cited in the description, by reacting m-nitro-benzoic acid chlorides of formula II with aminosulfons of formula III, under the influence of B equivalents of base IV. Said method is characterized in that, during step a) the aminosulfon of formula III is reacted with B1 equivalents of base IV, and during step b), the reaction mixture resulting from step a) is reacted with m-nitro-benzoic acid chlorides of formula II and B2 equivalents of base IV; B, B1 and B2 having the designations cited in the description.