PROCESS FOR PRODUCING 5-(ACYLAMINO)-1,2,4-TRIAZOLE-3-SULFONIMIDE DERIVATIVES

A process for preparing 5-acylamino-1,2,4-triazole-3-sulfonamides, which are useful intermediates for the preparation of 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamide herbicides, from 5-amino-3-mercapto-1,2,4-triazole by sequential acylation to 5-acylamino-3-mercapto-1,2,4--triazoles, chlorination t...

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Hauptverfasser: COSTALES,MARK J.,US, MARIAM,KIDISTI G.,US, SHANKAR,RAVI B.,US, LITTLE,JACK C.,US, PEWS,GARTH R.,US, THOMPSON,SUSAN D.,US
Format: Patent
Sprache:eng
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Zusammenfassung:A process for preparing 5-acylamino-1,2,4-triazole-3-sulfonamides, which are useful intermediates for the preparation of 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamide herbicides, from 5-amino-3-mercapto-1,2,4-triazole by sequential acylation to 5-acylamino-3-mercapto-1,2,4--triazoles, chlorination to 5-acylamino-3-chlorosulfonyl-1,2,4-triazoles, and condensation with substituted anilines to 5-acylamino-1,2,4-triazole-3-sulfonamides is provided. Novel 5-acylamino-3-chlorosulfonyl-1,2,4--triazole compounds are key intermediates in the process.