- Method for catalytically synthesizing dimethomorph by using Lewis base
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The invention relates to the technical field of dimethomorph production, and particularly discloses a method for catalytically synthesizing dimethomorph by using a Lewis base. According to the method,benzophenone and acetylmorpholine are subjected to a low-temperature reaction, an intermediate-state product is prepared in the presence of a solvent and the Lewis base, and then an elimination reaction is carried out under the high-temperature condition to remove one molecule of water, so that the product is obtained. The method has the advantages of concise and reliable synthetic route, low consumption of the raw material acetylmorpholine, easy control of the reaction, low cost of the obtained product, less generation of three wastes, and high economic and environmental protection values.
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Paragraph 0016-0019
(2021/03/18)
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- Visible-Light-Enabled Oxidative Coupling of Alkenes with Dialkylformamides to Access Unsaturated Amides
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A practical and direct method for oxidative cross-coupling of alkenes with dialkylformamides is established employing visible-light-enabled photoredox catalysis. This strategy allows efficient access to diverse unsaturated amides under mild reaction conditions. The application of an appropriate diaryliodonium salt was demonstrated to be critical to the success of this process. This catalyst system is well tolerant of a variety of useful functional groups.
- Lu, Maojian,Lin, Zhaowei,Chen, Shanyi,Chen, Hongyou,Huang, Mingqiang,Cai, Shunyou
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p. 9929 - 9933
(2019/12/24)
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- Dimethomorph production method
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The invention discloses a dimethomorph production method in the technical field of pesticide production. The production method comprises: 1) synthesizing veratrole; 2) synthesizing 3,4-dimethoxy-4-chloro-benzophenone; 3) synthesizing acetylmorpholine; and 4) synthesizing dimethomorph. Sodium tert-butoxide is taken as a basic catalyst for synthesizing dimethomorph from 3,4-dimethoxy-4-chloro-benzophenone and acetylmorpholine, and a sodium hydroxide solution is used to perform alkali washing on a reactant in a reaction vessel. Sodium hydroxide has a catalytic effect on synthesis of dimethomorphfrom 3,4-dimethoxy-4-chloro-benzophenone and acetylmorpholine. The defect that the catalytic effect of sodium tert-butoxide is gradually reduced due to unstable chemical property of sodium tert-butoxide and degradation of sodium tert-butoxide when sodium tert-butoxide comes into water is overcome. The dimethomorph product is improved in conversion rate and purity.
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- FUNGICIDAL MIXTURES
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The present invention relates to fungicidal mixtures comprising, as active components, 1) azolylmethyloxiranes of the general formula I wherein the variables have the meanings described in the application, 2) a fungicidal compound II, and 3) optionally a further fungicidal compound II, where the compounds II of components 2 and 3 independently of one another are selected from the group consisting of the compounds described in the application, with the proviso that components 2 and 3 are not identical, and to the use of the fungicidal mixtures for controlling phytopathogenic fungi and to the compositions comprising them.
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- FUNGICIDAL MIXTURES
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The present invention relates to fungicidal mixtures comprising, as active components, 1) azolylmethyloxiranes of the general formula I in which the variables have the meanings described in the application, and 2) a fungicidal compound II, where the compounds II of component 2 are selected from among the compounds described in the application, and to the use of the fungicidal mixtures for controlling phytopathogenic fungi and to the compositions comprising them.
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- Fungicidal compositions based on (N-phenylacetyl-N-2,6-XYLYL)methyl alaninate
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When used in admixture with mancozeb, chlorothalonil, a copper salt, folpet, fluazinam or cymoxanil (this being possible for the latter to be used also together with one of the other five components), metalaxyl having a high R-enantiomer content of more than 70% by weight, or pure R-metalaxyl, exhibits a markedly increased fungicidal action against plant diseases as compared with a similar mixture in which metalaxyl is used in the form of the racemate.
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- Method of combating fungus
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The invention relates to a method of combating fungus which comprises treating plants subject to or subjected to fungal attack, seeds of such plants or the medium in which such plants are growing or are to be grown with the Z-isomer of 4-[3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl]morpholine or with a composition comprising a carrier and, as active ingredient, the said Z-isomer; and the use of the Z-isomer as a fungicide.
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- Method for controlling phytopathogenic fungi
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A method for controlling phytopathogenic fungi comprises applying a selected fungicidally active N-acetonylbenzamide compound and a second fungicidally active compound selected from the group consisting of manganese-zinc ethylenebis(dithiocarbamate), manganese ethylenebis(dithiocarbamate), zinc ammoniate ethylenebis(dithiocarbamate), zinc ethylenebis(dithiocarbamate), 2-cyano-N-((ethylamino)carbonyl)-2-(methoxyimino)acetamide, and (E,Z) 4-(3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl)morpholine to plant seed, to plant foliage or to a plant growth medium and provides higher fungicidal activity than separate use of the same compounds.
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- Synergistic fungicidal compositions of N-acetonyl-benzamides
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A method for controlling phytopathogenic fungi comprises applying a selected fungicidally active N-acetonylbenzamide compound and a second fungicidally active compound selected from the group consisting of manganese-zinc ethylenebis(dithiocarbamate), manganese ethylenebis(dithiocarbamate), zinc ammoniate ethylenebis(dithiocarbamate), zinc ethylenebis(dithiocarbamate), 2-cyano-N-((ethylamino)carbonyl)-2-(methoxhyimino)acetamide, and (E,Z) 4-(3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl)morpholine to plant seed, to plant foliage or to a plant growth medium and provides higher fungicidal activity than separate use of the same compounds.
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- Process for the preparation of 3,3-diaryl acrylic acid amides
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The invention provides a process for the preparation of 3,3-diaryl acrylic acid amides of the general formula STR1 in which A, B and Q are as defined in the specification, by condensing a compound of formula STR2 with a compound of formula in which Q has the meaning given above, in a solvent in the presence of an alkali metal hydroxide, characterised in that the solvent is selected from alkanes, cycloalkanes or mixtures thereof.
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- Method of combating fungus
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The invention relates to a method of combating fungus which comprises treating plants subject to or subjected to fungal attack, seeds of such plants or the medium in which such plants are growing or are to be grown with the Z-isomer of 4-[3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl]morpholine or with a composition comprising a carrier and, as active ingredient, the said Z-isomer; and the use of the Z-isomer as a fungicide.
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- Preparation of 3,3-diarylacrylic acid amides
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3,3-Diarylacrylic acid amides are prepared by the reaction of a benzophenone with an acetamide in the presence of a base characterized in that a sodium alcoholate is used as the base.
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- Preparation of 3,3-diphenylacrylic acid amides
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3,3-diphenylacrylic acid amides are prepared by the reaction of a benzophenone with an acetamide in the presence of an alkali metal tertiary alcoholate characterized in that an alkali metal mono-alkyl carbonate is additionally present.
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- Preparing 3-(4 chlorophenyl)-3-(3,4-dimethoxyphenyl) acrylic acid morpholide in the presence of potassium tert-butylate
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The invention provides a process for the preparation of 3,3-diaryl acrylic acid amides of the formula STR1 in which A, B and Q are as defined in the specification, characterized by condensing a compound of formula STR2 with a compound of formula in which
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