- Method for preparing substituted 5-amino-n-phenyl-1,2,4-triazole-3-sulfonamides
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The present invention relates to a process for preparing 5-amino-N-phenyl-1,2,4-triazole-3-sulfonamides of the general formula (I) where X is halogen (in particular fluorine, chlorine or bromine), cyano or nitro, R is hydrogen or optionally halogen-substi
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- Preparation of 5-acylamino-1,2,4-triazole-3-sulfonamides
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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 are prepared 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. 5-Acylamino-3-chlorosulfonyl-1,2,4-triazole compounds are key intermediates in the process.
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- 5-amino-1,2,4-triazole-3-sulfonamides
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5-Amino-1,2,4-triazole-3-sulfonamides, which are intermediates for substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamide herbicides are prepared in two steps from 5-amino-3-mercapto-1,2,4-triazole by chlorination in a medium containing an aqueous acid
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- Synthesis of 1,2,4-Triazolopyrimidine-2-sulfonamides
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The 1,2,4-triazolopyrimidine-2-sulfonamides are a new class of highly active herbicides.A novel cyclization method for the synthesis of these compounds is discussed.
- Shankar, Ravi B.,Pews, R. Garth
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p. 169 - 172
(2007/10/02)
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- Preparation of N-(-3(((aryl)amino)suldonyl)-1H-1,2,4-triazol-5-yl)amines
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N-(3-(((2,6-Dihalophenyl)amino)sulfonyl)-1H-1,2,4-triazol-5-yl)amines, intermediates for the preparation of herbicidal substituted 1,2,4-triazolo(1,5-a)pyrimidine-2-sulfonanilides, are directly prepared from an appropriataely substituted 4-bromoaniline an
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- Substituted 1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamides, compositions containing them, and their utility as herbicides
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Novel substituted triazolo[1,5-a]pyrimidine-2-sulfonamides, e.g., 5,7-dimethyl-N-(2,6-dichlorophenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sulfonamide and their agriculturally acceptable salts are prepared. These compounds and compositions containing them are useful for the control of unwanted vegetation. Novel substituted triazolo[1,5-a]pyrimidine-2-sulfonyl chlorides and substituted anilines and their use as intermediates are also described.
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