104098-48-8Relevant articles and documents
Synthetic method of imazameth
-
, (2021/01/11)
The invention relates to a synthetic method of imazameth, wherein the synthetic method comprises the following steps: reacting 5-methylpyridine-2,3-dicarboxylic acid serving as a raw material with acetic anhydride to generate 5-methylpyridine-2,3-dicarboxylic anhydride; and under a low-temperature condition, continuing to react with alcohol to generate a compound represented by a structural formula (I), carrying out ring closing reaction on the compound and 2-amino-2,3-dimethylbutyramide under an alkaline condition to generate imazameth sodium salt, extracting to regulate the pH value, and thus obtaining an imazameth product. The method has the advantage that a new method for obtaining imazameth is provided. The method is high in reaction speed, extremely high in product purity, high in yield, mild in reaction condition, free of isomers, free of catalysts and few in three wastes, the synthesis process is extensive, the reaction condition is optimized, the reaction equipment cost is reduced, the produced product is easy to separate, and the production process is simplified. The structural formula (I) is described in the specification.
Imazameth intermediate as well as preparation method and application thereof
-
Paragraph 0030-0048, (2021/01/11)
The invention discloses an imazameth intermediate as well as a preparation method and application thereof. The imazameth intermediate is obtained by taking 5-methylpyridinyl-2,3-dicarboxylic acid diethyl ester and 2-amino-2,3-dimethylbutanamide as raw materials through an amine ester exchange reaction under the action of a metal catalyst. Further a ring closing reaction is conducted with an alkaline aqueous solution, and an acid is added for acidification, so that imazamox is obtained. The method is high in reaction speed, high in product purity, high in yield, mild in reaction condition, lessin three wastes and extensive in synthesis process, optimizes the reaction condition and reduces the equipment cost of the reaction, also the produced product is easy to separate, and the productionprocess is simplified.
Preparation method for imidazolinone compound
-
Paragraph 0042; 0047, (2019/03/29)
The invention provides a preparation method for an imidazolinone compound, belongs to the technical field of organic synthesis, and can solve the problems that a large amount of wastewater is producedand the content of impurities in the product is high in the existing process for preparing the imidazolinone compound. According to the preparation method for the imidazolinone compound provided by the invention, a solution of 5-alkyl pyridine-2,3-phthalate is synthesized from ammonium carbonate; the steps of adding water, extracting, refining and the like are avoided in post-treatment; the obtained solution of the 5-alkyl pyridine-2,3-phthalate is used for subsequent reaction; and the wastewater is not produced. Then, a catalyst is added in the process of preparing 5-alkyl pyridine-2,3-dimethylbenzene anhydride, and the pH is controlled in the subsequent reaction process, so that the production of the impurities can be avoided, and the product purity is improved. The imidazolinone compound prepared by the method provided by the invention can be used as a high-efficiency herbicide.
Method for Controlling Rust Infections in Leguminous Plants
-
, (2009/06/27)
Method for controlling rust infections in leguminous plants by using heterocyclylcarboxanilides of the formula I where n=0-4; X=C1-C4-haloalkyl; Het=a pyrazole, thiazole or pyridine radical of the formula IIa, IIb or IIc where R1 is C1-C4-alkyl or C1-C4-haloalkyl, R2 is H or halogen, R3 is C1-C4-alkyl or C1-C4-haloalkyl, R4 is C1-C4-alkyl or C1-C4-haloalkyl and R5 is halogen, C1-C4-alkyl, C1-C4-haloalkyl, C1-C4-alkoxy, C1-C4-alkylthio, C1-C4-alkylsulfinyl or C1-C4-alkylsulfonyl, mixtures of heterocyclylcarboxanilides of the formula I and a fungicidally active compound II from the group of the azoles, acylalanines, amine derivatives, anilinopyrimidines, dicarboximides, dithiocarbamates, heterocylic compounds, phenylpyrroles, cinnamides, and analogs, or other fungicides according to the description, and also compositions and seed comprising these mixtures.
Herbicidal composition
-
, (2008/06/13)
The present invention relates to a herbicidal composition, comprising A) one or more compounds of the formula (I) 1in which Hal1 and Hal2 are identical or different halogen atoms, R1 is H, a cation or a C1-C20-carbon-containing radical and B) one or more surfactants, comprising as structural element at least 12 alkylene oxide units.
Substituted (hetero) aryl compounds, process for their preparation, agents containing them and their use as safeners
-
, (2008/06/13)
Substituted (hetero)aryl compounds, process for their preparation, agents containing them, and their use as safeners Compounds of the formula I and their salts, as defined in claim 1, are suitable as safeners for protecting crop plants against the phytotoxic side-effects of herbicides.
Mixtures of herbicides and antidotes, (hetero)-aryloxy compounds, their preparation, compositions containing them, and their use
-
, (2008/06/13)
The invention relates to crop protection agents which comprise an active substance combination of herbicide and safener. The herbicides are selected from the group comprising the ALS inhibitors (ALS=acetolactate synthase) such as sulfonylureas, imidazolines, triazolopyrimidinesulfonamides, pyrimidyloxypyridinecarboxylic acid derivatives and pyrimidyloxybenzoic acid derivatives. The safeners are compounds of the formula I STR1 which are as defined in claim 1, where Z and Y are N or CH, it being possible for H to be replaced by X, X is H, Hal, haloalkyl or -alkoxy, alkyl, alkoxy, alkylthio, NO2, NH2, CN, alkylsulfonyl, A is alkylene or alkenylene, B is carboxyl or a derivative of the carboxyl group. The mixtures are mainly suitable for controlling harmful plants in the crops maize and cereals.
Substituted isoxazolines, process for their preparation, composition containing them, and their use of safeners
-
, (2008/06/13)
Substituted isoxazolines, process for their preparation, compositions containing them, and their use as safeners. Compounds of the formula (I) and salts thereof, STR1 in which R1 is carboxyl, formyl or another acyl radical or a derivative of the last-mentioned 3 groups, R2 is hydrogen, halogen, C1 -C18 -alkyl, C3 -C8 -cycloalkyl, C2 -C8 -alkenyl, C2 -C8 -alkynyl, C1 -C18 -alkoxy, C2 -C8 -alkenyloxy, C2 -C8 -alkynyloxy, C1 -C18 -alkylthio, C2 -C8 -alkenylthio, each of the last-mentioned 9 radicals in each case being unsubstituted or substituted, or (C1 -C8 -alkoxy)carbonyl, and R3 and R4 independently of one another are an aliphatic, araliphatic or heteroaraliphatic radical having 1 to 30 carbon atoms which is unsubstituted or substituted by one or more functional groups, or an aromatic or heteroaromatic radical which is unsubstituted or substituted, are suitable as safenets for pesticides, preferably herbicides, in crop plants. The compounds can be prepared from alkenes (II) and nitrile oxides (III) by the process of claim 6.
Methods for detecting acetohydroxyacid synthase inhibitors
-
, (2008/06/13)
The invention provides a method for determining whether a compound inhibits acetohydroxyacid synthase. The invention further provides a method for determining whether a plant is resistant to an acetohydroxyacid synthase inhibiting compound.