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. 08, 2016
Filed:
Mar. 20, 2014
Applicant:
Basf SE, Ludwigshafen, DE;
Inventors:
Frederik Menges, Schriesheim, DE;
Joachim Gebhardt, Wachenheim, DE;
Michael Rack, Eppelheim, DE;
Michael Keil, Freinsheim, DE;
Rodney F. Klima, Quincy, IL (US);
David Cortes, Quincy, IL (US);
Robert Leicht, Hannibal, MO (US);
Helmut Zech, Bad Duerkheim, DE;
Jochen Schroeder, Lambsheim, DE;
Assignee:
BASF SE, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 401/04 (2006.01); C07D 213/00 (2006.01); C07D 491/048 (2006.01); C07D 213/81 (2006.01); C07D 405/04 (2006.01); C07D 213/803 (2006.01);
U.S. Cl.
CPC ...
C07D 491/048 (2013.01); C07D 213/803 (2013.01); C07D 213/81 (2013.01); C07D 401/04 (2013.01); C07D 405/04 (2013.01);
Abstract
A process for manufacturing 5-chloromethyl-2,3-pyridine dicarboxylic acid anhydrides (I) Compounds (I) are useful intermediates in the synthesis of herbicidal imidazolinones.