Preparation of sulfonamide herbicide process intermediates

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United States of America

PATENT NO 12077505
SERIAL NO

17296695

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Abstract

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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 R1 is a C1-C6 alkyl, X is Cl or OH, Y is halogen, OH, or OR2, and R2 is a C1-C6 alkyl.

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Patent Owner(s)

Patent OwnerAddress
CORTEVA AGRISCIENCE LLC9330 ZIONSVILLE ROAD INDIANAPOLIS IN 46268

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ober, Matthias S Midland, US 29 49
Ondari, Mark E Freeland, US 9 25
Oppenheimer, Jossian Midland, US 19 26

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