Broad-spectrum bactericidal low-toxicity low-residue growth-promoting thiophanate-methyl manganese-zinc compound and composition thereof

A technology of thiophanate mancozeb and thiophanate-methyl mancozeb, which is applied in the field of pesticides and can solve the problems of large dosage, multi-process preparation production, waste of resources, etc.

Pending Publication Date: 2020-08-18
刘力
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] So far, there is no public literature at home and abroad to report on thiophanate mancozeb compound and its preparation and use, but in agricultural and forestry production, it is necessary to supplement manganese zinc fungicides for sterilization, but at present, thiophan

Method used

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  • Broad-spectrum bactericidal low-toxicity low-residue growth-promoting thiophanate-methyl manganese-zinc compound and composition thereof
  • Broad-spectrum bactericidal low-toxicity low-residue growth-promoting thiophanate-methyl manganese-zinc compound and composition thereof
  • Broad-spectrum bactericidal low-toxicity low-residue growth-promoting thiophanate-methyl manganese-zinc compound and composition thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0123] Embodiment 1-1A thiophanate-methyl mancozeb [C 12 h 12 N 4 o 4 S 2 (Mn) 0.5 (Zn) 0.5 ] preparation

[0124]At room temperature, add 3.424g of thiophanate-methyl (0.01mol) to a 100ml flask, add 20ml of water, stir, add an appropriate amount of 5% aqueous sodium hydroxide solution, stir until just completely dissolved, then add manganese sulfate monohydrate (0.005mol ) 0.845g and 1.438g of zinc sulfate heptahydrate (0.005mol) dissolved in an appropriate amount of water, stirred at about 40°C for half an hour, added 10ml of ethanol, stood for 30 minutes, took it out and let it cool, suction filtered, washed the solid with a small amount of water until there was no sulfuric acid Root ion, suction filtration, the obtained solid was diluted and dried in vacuum at about 80°C for about 6 hours to obtain 3.2g of gray solid; melting point: greater than 250°C; theoretical value of elemental analysis: C 35.98%, H3.02%, N 13.99%, S16. 01%; measured value: C 35.92%, H 3.09%, N...

Embodiment 1-3

[0126] Embodiment 1-3A thiophanate-methyl mancozeb [C 12 h 12 N 4 o 4 S 2 (Mn) 0.8 (Zn) 0.2 ] preparation

[0127] At room temperature, add 6.848g of thiophanate-methyl (0.02mol) to a 250ml flask, add 40ml of water, stir, add 5% sodium hydroxide solution, stir to dissolve the solid, then add manganese sulfate monohydrate (0.008mol) A solution of 1.352g and 0.576g of zinc sulfate heptahydrate (0.002mol) dissolved in an appropriate amount of water, stirred at about 40°C for half an hour, added 20ml of ethanol, took it out and let it cool, filtered with suction, washed the solid with a small amount of water until there was no sulfate ion, pumped Filtration, the resulting solid was diluted and dried in vacuum at about 85°C for about 4h to obtain 6.2g of a brownish gray solid; melting point: greater than 250°C; content (HPLC) thiophanate-methyl ion: 85.43% (theoretical value: 85.65%); content ( Atomic absorption spectrometry): Mn11.14% (theoretical value 11.06%), Zn3.22% (th...

Embodiment 1-5

[0129] Embodiment 1-5A thiophanate-methyl mancozeb [C 12 h 12 N 4 o 4 S 2 (Mn) 0.2 (Zn) 0.8 ] preparation

[0130] At room temperature, add 6.848g of thiophanate-methyl (0.02mol) to a 250ml flask, add 40ml of water, stir, add 8% sodium hydroxide solution, stir to dissolve the solid, then add manganese sulfate monohydrate (0.002mol) A solution of 0.338g and 2.301g of zinc sulfate heptahydrate (0.008mol) dissolved in an appropriate amount of water, stirred at about 30°C for 1 hour, added 5ml of methanol and 10ml of ethanol, took it out and let it cool, filtered with suction, washed the solid with a small amount of water until the filtrate was free of sulfate ions , suction filtration, the obtained solid was diluted and vacuum dried at about 90°C for about 4h to obtain 6.2g of gray solid; melting point: greater than 220°C, discoloration; content (HPLC) thiophanate-methyl: 84.13% (theoretical value: 84.32%); Content (atomic absorption spectrometry): Mn 2.69% (theoretical va...

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Abstract

The invention discloses a broad-spectrum bactericidal low-toxicity low-residue growth-promoting thiophanate-methyl manganese-zinc compound or composite. Compared with a single preparation, the thiophanate-methyl manganese-zinc compound or the thiophanate-methyl manganese-zinc compound has the advantages that sterilization and manganese-zinc supplementation are achieved when the thiophanate-methylmanganese-zinc compound or the thiophanate-methyl manganese-zinc compound or the thiophanate-methyl manganese-zinc compound is applied to crops, so that the complex preparation process is reduced, application is convenient, preparation is easy, energy consumption is lower, and environment-friendly; the technical scheme is suitable for preparing a composition containing the compound and pesticidesfor preventing and treating various bacterial and fungal diseases on crops and/or promoting the health or growth and development of the crops, or is applied to medicaments in the fields of protectingindustrial materials from being invaded by germs and the like.

Description

technical field [0001] The present invention relates to the technical field of pesticides, in particular to provide a broad-spectrum bactericidal, low-toxicity and low-residue thiophanate series manganese zinc compound for promoting crop growth, that is, a new compound or compound of thiophanate mancozeb and thiophanate-methyl mancozeb Compositions and their preparation and use. Background technique [0002] Thiophanate (molecular formula: C 14 h 18 N 4 o 4 S 2 , molecular weight: 370.48), 1,2-bis(3-ethoxycarbonyl-2-thioureido)benzene, alias: thiophanate ethyl; thiophanate-methyl (molecular formula C 12 h 14 N 4 o 4 S 2 , CAS No.: 23564-05-8, molecular weight 342.394), chemical name is 1,2-bis(3-methoxycarbonyl-2-thioureido)benzene. Both thiophanate and thiophanate-methyl are broad-spectrum, systemic benzimidazole fungicides, which have preventive and therapeutic effects. They are converted into carbendazim in plants first, and then interfere with the mitosis of th...

Claims

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Application Information

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IPC IPC(8): C07C335/28A01N47/34A01N43/54A01N37/50A01N47/24A01N43/653A01N55/10A01N43/16A01N47/18A01N47/12A01N47/38A01N43/88A01N43/36A01N43/46A01N51/00A01N43/22A01P1/00A01P3/00
CPCC07C335/28A01N47/34A01N43/54A01N37/50A01N47/24A01N43/653A01N55/00A01N43/16A01N47/18A01N47/12A01N47/38A01N43/88A01N43/36A01N43/46A01N51/00A01N43/22C07B2200/13
Inventor 刘力
Owner 刘力
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