New pyrazole sulfonylureas: synthesis and herbicidal activity
1992
Yamamoto, S. | Satō, Tōru | Morimoto, K. | Nawamaki, T.
A number of 3-substituted pyrazole-5-sulfonamides were prepared by various methods that included diazotization, lithiation, cyclization and chlorination. These sulfonamides were converted into 3-substituted pyrazole-5-sulfonylureas that possessed high herbicidal activity. Among them, NC-319: methyl 3-chloro-5-(4,6-di-methoxypyrimidin
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