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. 03, 2024
Filed:
Dec. 20, 2019
Applicant:
Corteva Agriscience Llc, Indianapolis, IN (US);
Inventors:
Jossian Oppenheimer, Midland, MI (US);
Matthias S. Ober, Midland, MI (US);
Mark E. Ondari, Freeland, MI (US);
Assignee:
CORTEVA AGRISCIENCE LLC, Indianapolis, IN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D 213/71 (2006.01); C07C 253/30 (2006.01); C07C 255/15 (2006.01); C07D 213/64 (2006.01);
U.S. Cl.
CPC ...
C07D 213/71 (2013.01); C07C 253/30 (2013.01); C07C 255/15 (2013.01); C07D 213/64 (2013.01);
Abstract
Improved methods for preparing chemical precursors to sulfonyl chloride III, which are important intermediates in the preparation of pyroxsulam herbicide, are provided. Also provided are compounds of Formula III, Formula VII, and IV, wherein Ris a C-Calkyl, X is Cl or OH, Y is halogen, OH, or OR, and Ris a C-Calkyl.