Abstract: Substituted N-(1-ethyl-4-pyrazolyl)triazoloazinesulfonamide compounds, such as N-(1-ethyl-5-methyl-3-(trifluoromethyl)-4-pyrazoyl)-5-methoxy-7-methyl-?1, 2,4!triazolo?1,5-c!pyrimidine-2-sulfonamide and N-(1-ethyl-5-methyl-3-(trifluoromethyl)-4-pyrazolyl)-5-methoxy-7-methyl?1, 2,4!triazolo?1,5-a!pyridine-2-sulfonamide, were prepared and found to possess selective herbicidal utility.

Abstract: Substituted N-aryl?1,2,4!triazolo?1,5-a!pyridine-2-sulfonamide compounds, such as N-(2,6-difluorophenyl)-5-methoxy-7-methyl?1,2,4!triazolo?1,5-a!pyridine-2- sulfonamide, N-(4-bromo-1-methyl-3-pyrazolyl)-8-chloro-5-methoxy?1,2,4!triazolo?1,5-a!p yridine-2-sulfonamide, and N-(2-fluoro-4-methyl-3-pyridinyl)-8-ethoxy-6-chloro?1,2,4!triazolo?1,5-a!p yridine-2-sulfonamide, were prepared by condensation of a 2-chlorosulfonyl?1,2,4!triazolo?1,5-a!pyridine compound with an aryl amine. The compounds prepared were found to possess excellent herbicidal activity on a broad spectrum of vegetation at low application rates.

Abstract: Substituted N-aryl[1,2,4]triazolo[1,5-a]-pyrazine-2-sulfonamide compounds, such as 5-bromo-N-(2,6-dichlorophenyl)-8-methoxy[1,2,4]triazolo[1,5-a]-pyrazine-2- sulfonamide, were prepared by condensation of a substituted 2-chlorosulfonyl[1,2,4]triazolo[1,5-a]pyrazine compound, such as 5-bromo-2-chlorosulfonyl-8-methoxy[1,2,4]triazolo[1,5-a]pyrazine with a substituted arylamine compound, such as 2,6-dichloroaniline, and found to possess herbicidal utility.

Abstract: Substituted N-aryl[1,2,4]triazolo[1,5-a]pyridine-2-sulfonamide compounds, such as N-(2,6-difluorophenyl)-5-methoxy-7-methyl[1,2,4]triazolo[1,5-a]pyridine-2- sulfonamide, N-(4-bromo-1-methyl-3-pyrazoly)-8-chloro-5-methoxy[1,2,4]triazolo[1,5-a]py ridine-2-sulfonamide, and N-(2-fluoro-4-methyl-3-pyridinyl)-8-ethoxy-6-chloro[1,2,4]triazolo[1,5-a]- pyridine-2-sulfonamide, were prepared by condensation of a 2-chlorosulfonyl[1,2,4]triazolo[1,5-a]pyridine compound with an aryl amine. The compounds prepared were found to possess excellent herbicidal activity on a broad spectrum of vegetation at low application rates.

Abstract: Substituted ring annulated 5-alkoxy-N-aryl-[1,2,4]triazolo[1,5-c]pyrimidine-2-sulfonamide compounds, such as N-(2,6-dichlorophenyl)-5-methoxycyclopenteno[d]-[1,2,4]triazolo[1,5-c]pyri midine-2-sulfonamide, were prepared by condensation of an appropriate 2-chloro-sulfonyl-5-alkoxy[1,2,4]triazolo[1,5-c]pyrimidine compound, such as 2-chlorosulfonyl-5-methoxycyclopenteno[d][1,2,4]triazolo[1,5-c]pyrimidine, with a substituted arylamine compound, such as 2,6-dichloroaniline, and found to possess herbicidal utility.

Abstract: Substituted N-indazolyl[1,2,4]triazolo[1,5]-c-pyrimidine-2-sulfonamide compounds, such as N-(4-fluoro-1-methyl-3-indazolyl)-5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]p yrimidine-2-sulfonamide, were prepared by condensation of a 2-chlorosulfonyl[1,2,4]triazolo[1,5-c]pyrimidine compound, such as 2-chlorosulfonyl-5-ethoxy-7-fluoro[1,2,4]triazolo[1,5-c]pyrimidine, with a substituted 3-aminoindazole compound, such as 3-amino-4-fluoro-1-methylindazole, and found to possess herbicidal utility.

Abstract: 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.

Abstract: 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.

Abstract: N-(3-, 4-, and 5-)-pyrazolyl-1,2,4-triazolo[1,5-c]pyrimidine-2-sulfonamide compounds, substituted on the pyrimidine ring with an alkoxy group and on the pyrazine ring, such as N-(4-bromo-1-methylpyrazol-3-yl)-7-chloro-5-methoxy-1,2,4-triazolo[1,5-c]p yrimidine-2-sulfonamide, were prepared from alkoxy substituted 1,2,4-triazolo[1,5-c]-pyrimidine-2-sulfonyl halides by condensation with substituted (3-, 4-, and 5-aminopyrazoles in the presence of a pyridine base and a catalytic amount of dimethyl sulfoxide. The compounds were found to possess general and, in some cases, selective pre- and postemergence herbicidal activity.

Abstract: 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-sulf onamide 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.

Abstract: 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-sulf onamide and their agriculturally acceptable salt 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.

Abstract: The insecticidal activity of certain pyridinyl phosphorus compounds is enhanced by the admixture therewith of certain 2,4-disubstituted-5-pyrimidinyl phosphoramidothioates.

Abstract: 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-sulf onamide and their agriculturally acceptable salt 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.

Abstract: 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-sulf onamide 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.

Abstract: The insecticidal activity of certain O,O-dialkyl pyridinyl phosphorus ester compounds is enhanced by the admixture therewith of certain substituted pyridinyl phosphoramidates or phosphoramidothioates.

Abstract: Novel compounds, e.g., 5,7-dimethyl-N-(2,6-dichlorolphenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sul fonamide and their compositions and use in the control of weeds and in the suppression of nitrification of ammonium nitrogen in soil. Other novel compounds and their compositions and use in the inhibition of bolting in sugar beets. Other novel compounds and their compositions and use as plant gametocides.

Abstract: Novel compounds, e.g., 5,7-dimethyl-N-(2,6-dichlorolphenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sul fonamide and their compositions and use in the control of weeds and in the suppression of nitrificatin of ammonium nitrogen in soil. Other novel compounds and their compositions and use in the inhibition of bolting in sugar beets. Other novel compounds and their compositions and use as plant gametocides.

Abstract: Novel compounds, e.g., 5,7-dimethyl-N-(2,6-dichlorolphenyl)-1,2,4-triazolo[1,5-a]pyrimidine-2-sul fonamide and their compositions and use in the control of weeds and in the suppression of nitrification of ammonium nitrogen in soil. Other novel compounds and their compositions and use in the inhibition of bolting in sugar beets. Other novel compounds and their compositions and use as plant gametocides.

Abstract: Disclosed are phosphorus derivatives of 6-cycloalkyl-4-pyrimidinols and their utility as insecticides which possess both systemic and foliar activity for plants against insect pests.

Abstract: The insecticidal activity of certain pyridinyl phosphorus compounds is enhanced by the admixture therewith of certain 2,5,6-trisubstituted-4-pyrimidinyl phosphoramidates or phosphoramidothioates.