- HERBICIDAL COMPOSITIONS
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The present invention provides compositions comprising herbicidally active compounds (A) and (B), where (A) represents one or more compounds of the general formula (I) or agrochemically compatible salts thereof [component (A)], and (B) represents one or more herbicides [component (B)]. The application further relates to a method and to the use of the herbicidal composition according to the invention for controlling harmful plants or for regulating growth.
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- METHOD FOR PREPARING HIGH-PURITY SULFONAMIDE COMPOUND, AND INTERMEDIATE OF SULFONAMIDE COMPOUND
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The present invention discloses a method for preparing a high-purity sulfonamide compound and an intermediate of the sulfonamide compound. The method comprises the following steps: a, taking a crude product of a sulfonamide compound (I) as an initial raw material, and enabling the raw material to react with a compound of a formula (II) in presence of alkali and a catalyst so as to synthesize an intermediate of a formula (III); and b, enabling the compound represented by the formula (III) to react with alkali or acid, thereby obtaining the high-purity sulfonamide compound (I).
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Paragraph 0063-0064
(2018/02/03)
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- The preparation method of the double chlorine sulphur grass amine (by machine translation)
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The invention discloses a double-chlorine sulphur grass amine preparation method, which is composed of a 2 - chloro sulfonyl - 7 - fluoro - 5 - ethoxy [1, 2, 4] triazolo [1, 5 - c] pyrimidine in organic solvent with 2, 6 - dichloro the amine passes through condensation reaction; said condensation reaction is 3, 5 - dimethyl pyridine carried out under catalysis. The 2 - chloro sulfonyl - 7 - fluoro - 5 - ethoxy [1, 2, 4] triazolo [1, 5 - c] pyrimidine with the 3, 5 - dimethyl pyridine molar ratio of 1:1 - 1:5. Said organic solvent is dimethyl sulfoxide (DMSO) containing mixed solvent; the mixed solvent of dimethyl sulfoxide in a weight percentage of 0.1% -1%. The method of the invention is high in safety, simple operation, simple process conditions, in particular by selection of appropriate catalyst and organic solvent, can obtain higher reaction yield and purity of the product, is suitable for industrial production. (by machine translation)
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Paragraph 0014; 0015; 0016; 0018; 0019; 0020
(2017/07/21)
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- Preparation method of diclosulam
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The invention provides a preparation method of diclosulam and belongs to the technical field of chemical synthesis. The preparation method comprises the following steps: taking 2,2'-dithio-bis(5-ethyoxyl-7-fluoro[1,2,4]triazole[1,5]pyrimidine) as a raw material, and dropwise adding sulfonyl chloride in the presence of sodium nitrate for carrying out chlorosulfonylation to obtain 2-chlorosulfonyl-5-ethyoxyl-7-fluoro[1,2,4]triazole[1,5]pyrimidine; and carrying out sulfonylation on the 2-chlorosulfonyl-5-ethyoxyl-7-fluoro[1,2,4]triazole[1,5]pyrimidine and 2,6-dichloroaniline in the presence of a catalyst DMAP, so that the diclosulam is obtained. The preparation method provided by the invention has the advantages that the yield and quality are basically consistent with the traditional technology when the diclosulam is obtained by adopting the technology, the problems that usage amount of a highly toxic product chlorine is large and potential safety hazards exist in the traditional technology are solved, the total molar yield reaches more than 80%, and the diclosulam is applicable to industrial production application.
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Paragraph 0016
(2017/07/22)
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- N-ARYLSULFILIMINE COMPOUNDS AND THEIR USE AS CATALYSTS IN THE PREPARATION OF N-ARYLARYLSULFONAMIDE COMPOUNDS
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N-arylsulfilimine compounds, such as S,S-dimethyl-N-(2,6-dichlorophenyl)sulfilimine, were prepared and found to catalyze the reaction of aromatic sulfonyl chloride compounds, such as 2-chlorosulfonyl-7-fluoro-5-ethoxy[1,2,4]triazolo[1,5-c]pyrimidine, with aromatic amine compounds, such as 2,6-dichloroaniline, to form N-arylarylsulfonamide compounds, such as N-(2,6-dichlorophenyl)-7-fluoro-5-ethoxy[1,2,4]triazolo[1,5-c]-pyrimidine-2-sulfonamide. The aryl moiety of the N-arylsulfilimine catalyst and the aryl moiety of the aromatic amine compound were generally chosen to be identical.
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- N-arylsulfilimine compounds and their use as catalysts in the preparation of N-arylarylsulfonamide compounds
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N-arylsulfilimine compounds, such as S,S-dimethyl-N-(2,6-dichlorophenyl)sulfilimine, were prepared and found to catalyze the reaction of aromatic sulfonyl chloride compounds, such as 2-chlorosulfonyl-7-fluoro-5-ethoxy[1,2,4]triazolo[1,5-c]pyrimidine, with aromatic amine compounds, such as 2,6-dichloroaniline, to form N-arylarylsulfonamide compounds, such as N-(2,6-dichlorophenyl)-7-fluoro-5-ethoxy[1,2,4]triazolo[1,5-c]-pyrimidine-2-sulfonamide. The aryl moiety of the N-arylsulfilimine catalyst and the aryl moiety of the aromatic amine compound were generally chosen to be identical.
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- Herbicidal compositions with increased crop safety
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Disclosed are herbicidal concentrate formulation compositions having reduced grass crop plant phytotoxicity comprising certain sulfonamide or sulfonylurea herbicides in admixture with a non-herbicidal organic or inorganic acid or mixture thereof in an amount sufficient to insure that during the post-emergent agricultural uses thereof in water diluted form the pH of the mixture is below about 5; also disclosed is the preparation of said compositions, aqueous formulations of said concentrate and the use of said formulations.
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- Herbicidal heterocyclic sulfonylurea compositions safened by herbicidal acids such as 2,4-D below a pH of 5
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Disclosed are herbicidal concentrate formulation compositions having reduced grass crop plant phytotoxicity comprising certain sulfonamide or sulfonylurea herbicides in admixture with a herbicidal organic acid from the group consisting of clopyralid, 2,4-D, 2,4-DP, dicamba, dichlorprop-P, fluroxypyr MCPA, MCPP, mecoprop-P, picloram, triclopyr or mixtures of said acids; also disclosed is the preparation of said compositions and the pre- and post-emergent agricultural uses thereof in water diluted form.
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