PREPARATION OF SULFONAMIDE HERBICIDE PROCESS INTERMEDIATES
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United States of America
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Jan 27, 2022
app pub date -
Dec 20, 2019
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Dec 20, 2019
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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 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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