53results about How to "Has herbicidal activity" patented technology

The invention discloses a clean manufacturing method of 4, 6-disubstituted-amino-1, 3, 5-triazine derivant, which comprises the following steps: adopting cyanuric acid and substituted amine as raw material; adopting imidazole salt, pyridine salt or quaternaries as ionic solution; simplifying the operation; reducing environmental pollution; improving receiving rate; fitting for large scale of industrial manufacturing.

The invention discloses an N-substituted alkyl arylxoy phenoxyl propanamide compound shown in the formula (I), a preparation method, a weeding composition and application of the composition for controlling malignant grassy weed in a rice field.

An unsaturated alpha, beta-and beta, gamma-carboxylate with high herbiciding activity is disclosed.

The invention discloses a piperonyl-containing aryloxyphenoxies propionate compound, which has the following structure: the formula is shown in the specification. The specific preparation method includes steps of taking catechol as raw material, and compounding heliotropin through two-step reaction; performing reduction reaction with NaBH4 to prepare 3, 4- methylenedioxy phemethylol; reacting 2-(4-aryloxyphenoxies) propionyl chloride with prepare 3, 4- methylenedioxy phemethylol to prepare two piperonyl-containing aryloxyphenoxies propionate compounds. The compound has good weeding activity; especially, the weeding activity of monocotyledon weed is better than that of dicotyledonous weed; the preparation method is simple to operate, and the yield is high.

The invention discloses N-[( dihydrobenzofuran-7-yloxyl)alkyl]-2-aryloxy amide derivatives which are represented as a structural formula I and a structural formula II, and in the structural formula I or II, R is selected from a group consisting of H, C1-C2 alkyl, C3-C4 linear alkyl and C3-C4 branched alkyl; n is selected from a group consisting of 1,2,3,4,5 and 6; Y<1> is selected from a group consisting of H, C1-C2 alkyl, F, Cl, Br and I; Y<2> is selected from a group consisting of H, C1-C2 alkyl, F, Cl, Br, I, trifluoromethyl and trifluoroethyl; and Y<3> is selected from a group consisting of H, C1-C2 alkyl, F, Cl, Br and I. The invention also provides an application of the N-[(dihydrobenzofuran-7-yloxyl)alkyl]-2-aryloxy amide derivatives to preparing herbicides.

The invention discloses aryloxy-phenoxy propionate compounds containing piperonyl. The compounds have a following structure. The preparation method specifically includes following preparation steps: using catechol as a raw material; synthesizing heliotropin through two-step reaction; enabling heliotropin to be in reductive reaction with NaBH4 to prepare 3, 4-methylene dioxybenzyl alcohol; enabling 2-(4-aromatic oxygen phenyl) propionyl chloride to react with 3, 4-methylene dioxybenzyl alcohol to prepare two aryloxy-phenoxy propionate compounds containing piperonyl. The compounds have higher weeding activity, especially for monocotyledon weed than dicotyledon weed. The preparation method is simple to operate and high in yield.

The invention relates to delta-aminoalkylbenzofuranol ethers represented by chemical structural formula I shown in the description, and an application thereof in the preparation of herbicides. In thechemical structural formula I, R is selected from C1-C2 alkyl groups, and n is selected from 2, 3 and 4.

The invention discloses preparation and application research of oil-soluble and water-soluble aryloxy phenoxy carboxylic acids and carboxylate compounds. As shown in general formulae (I, II), n is equal to 0, 1, 2, 3, 4, 5, or the like, or (CH2)n and represents a branched alkyl; Y represents Cl-, Br-, F-, I-, AcO-, acetyl salicylate radical, a citrate radical, salicylate radical, p-toluenesulfonate radical, hydrogen sulfate radical, or other negative ions; R1 represents alkyl with 1-6 carbon atoms, alkoxy with 1-6 carbon atoms, alkenyl with 1-6 carbon atoms, or aryl; R2 represent alkyl with 1-6 carbon atoms, alkoxy with 1-6 carbon atoms, alkenyl with 1-6 carbon atoms, or aryl; or R1 and R2 adopt the following structure; and Ar is one of the following groups.

The present invention relates to a class of (R)-N-(thiazol-2-yl)-2-[4-(pyridin-2-oxy)phenoxy]amide derivatives having a chemical structure formula represented by a formula (I) and salts thereof, wherein R is selected from C1-C2 alkyl, C3-C4 linear chain alkyl, or C3-C4 branched chain alkyl, R1 is selected from hydrogen, trifluoromethyl, C1-C2 alkyl, C3-C4 linear chain alkyl or C3-C4 branched chain alkyl, R2 is selected from hydrogen, C1-C2 alkyl, C3-C4 linear chain alkyl or C3-C4 branched chain alkyl, nitro, carboxy, methoxycarbonyl, ethoxycarbonyl, n-propoxycarbonyl, isopropoxycarbonyl, n-butoxycarbonyl, isobutoxycarbonyl and tert-butoxycarbonyl, Y1 is selected from hydrogen, C1-C2 alkyl, fluorine, chlorine, bromine or iodine, and Y2 is selected from hydrogen, trifluoromethyl, C1-C2 alkyl, fluorine, chlorine, bromine or iodine. According to the present invention, the (R)-N-(thiazol-2-yl)-2-[4-(pyridin-2-oxy)phenoxy]amide derivatives and the salts thereof can be used for preparing weeding agents.

The invention relates to 2-[4-(quinoxaline-2-yloxy)phenoxy]amide derivatives shown in chemical structural formula I shown in the specification, wherein R and R1 are selected from C1-C2 alkyl, C3-C4 linear alkyl or C3-C4 branched alkyl, R2 is selected from H, C1-C2 alkyl, C3-C4 linear alkyl or C3-C4 branched alkyl, X1-X3 and X5-X6 are selected from hydrogen and C1-C2 alkyl, X4 is selected from hydrogen, C1-C2 alkyl, fluorine, chlorine, and bromine, n is selected from 0, 1 or 2, and m is selected from 0 or 1. Application of 2-[4-(quinoxaline-2-yloxy)phenoxy]amide derivatives in the preparation of herbicides is also disclosed.

The present invention relates to a 1-pyrimidone group-4-chlo-5-benzoate compound and its preparation method. Said invention also provides the general formula of said compound. Said compound can be used as weedicide, and has high herbicidal activity.

The invention relates to the technical field of organic chemical synthesis and specifically discloses a trifluoromethylpicolinamide-containing compound and a preparation method and application thereof. The preparation method comprises that 2-trifluoromethylpyridine-3-carboxylic acid and aminoacetonitrile hydrochloride undergo a condensation acylation reaction in the presence of an organic solvent,a base and a condensing agent to produce the trifluoromethylpicolinamide-containing compound. The trifluoromethyl and amide bond at the ortho position and meta position of a pyridine ring have two structures shown in the formulas I and II and the two structures have low toxicity to the beneficial organism, can be easily degraded, have good environmental compatibility and herbicidal activity and can produce good effects of preventing dicotyledon weeds.

The invention provides a 7-aryloxyacetyl coumarin compound and application thereof in pesticides. The preparation method comprises the following steps: 1, adding resorcinol containing different substituent groups into a reaction bottle filled with concentrated sulfuric acid, stirring and dissolving, slowly dripping an acetylacetate compound under ice-water bath cooling, and reacting under the ice-water bath cooling for an hour after dripping is completed; reacting at room temperature for 24 hours; pouring into an ice-water mixture while agitating intensely, producing a yellow precipitate, performing suction filtration, and recrystallizing the filter cake by using absolute ethyl alcohol so as to obtain a 7-hydroxycoumarin compound; dissolving 2,2,4-dichlorphenoxyacetic acid and oxalyl chloride in a CH2Cl2 solvent, dripping N,N-dimethylformamide, reacting at room temperature for 2 hours so as to obtain acyl chloride; and 3, adding a catalyst into an organic solvent containing the 7-hydroxycoumarin compound and acyl chloride at a certain temperature, and recrystallizing after reacting for a period of time, thereby obtaining the 7-aryloxyacetyl coumarin compound. The compound disclosed by the invention has extremely high herbicidal activity.

The invention discloses 6-chloropyrazine-2-amide compounds containing diphenyl ether groups, and the compounds have the following general formulas. The preparation method comprises the following specific steps: taking 2-phenoxyaniline and 4-phenoxylaniline as raw materials, and respectively carrying out one-step reactions with 6-chloropyrazine-2-carboxylic acid under a condition of an alkali, a condensing agent and an organic solvent to synthesize a target compound (I) and a target compound (II). The compounds disclosed by the invention have relatively good herbicidal activity, particularly have certain prevention effects on dicotyledonous weeds under a usage amount of 2000 g/hm<2>, and can be used for preparing herbicides.

The invention discloses a N-(oxo-ethyl)-2-[4-(pyridine-2-yl-oxy)phenoxy]amide derivative of a chemical structure formula I as shown in the specification, in the formula, R and R2 are selected from hydrogen, C1-C2 alkyl, C3-C4 linear alkyl or C3-C4 branched alkyl; R1 and R3 are selected from C1-C2 alkyl, C3-C4linear alkyl or C3-C4 branched alkyl; R1 and R3 are selected from C1-C2 alkyl, C3-C4 linear alkyl or C3-C4 branched alkyl; X1, X2, X4 and X6 are selected from hydrogen and C1-C2 alkyl; X3 is selected from hydrogen, C1-C2 alkyl, fluorine, chlorine, bromine or iodine; X5 is selected from hydrogen, C1-C2 alkyl, trifluoromethyl, fluorine, chlorine, bromine or iodine. The N-(oxo-ethyl)-2-[4-(pyridine-2-yl-oxy)phenoxy]amide derivative can be used for preparing herbicides.

The invention discloses 2-aryloxy carboxylic acid(dihydrobenzofuran-7-phenoxyl)alkyl ester shown as the chemical structural formula I and the chemical structural formula II (please see the formula I and the formula II in the specification). R is selected from hydrogen, C1-C2 alkyl, C3-C4 linear chain alkyl and C3-C4 branch alkyl, n is selected from 1, 2, 3, 4, 5 and 6, and Z is selected from CH and N; Y<1> is selected from hydrogen, C1-C2 alkyl, fluorine, chlorine, bromine and iodine; Y<2> is selected from hydrogen, C1-C2 alkyl, fluorine, chlorine, bromine, iodine, trifluoromethyl, trifluoro ethyl and cyano; Y<3> is selected from hydrogen, C1-C2 alkyl, fluorine, chlorine, bromine and iodine. 2-aryloxy carboxylic acid(dihydrobenzofuran-7-phenoxyl)alkyl ester aims at being applied to preparing a herbicide.