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Dicamba tetramethyl guanidine salt, preparation method and applications thereof
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A technology of tetramethylguanidine salt and tetramethylguanidine, applied in the field of dicamba tetramethylguanidine salt and preparation thereof, can solve the problem of inability to effectively prevent weeds in wheat fields, crops that are prone to resistance, difficult to process, etc. problem, to achieve the effect of non-volatile, easy to absorb, not easy to decompose
Inactive Publication Date: 2020-03-27
WEIFANG SINO AGRI UNION CHEM CO LTD
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Problems solved by technology
[0003] The existing herbicides for removing weeds in wheat fields are generally compound herbicides, which are used in large quantities, and crops are prone to resistance, and are not easy to be processed into different herbicides due to the limitations of herbicide types, regions, climatic conditions and operating methods. The dosage form cannot effectively prevent weeds in wheat fields; therefore, it can be absorbed quickly in weeds and can effectively control weeds in wheat fields, but it does not affect the growth of wheat and will not cause toxicity to subsequent crops, with high safety of wheat field herbicides urgently need to be developed
Method used
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Embodiment 1
[0025] A kind of dicamba tetramethylguanidine salt, its structural formula is
[0026]
[0027] The preparation method of dicamba tetramethylguanidine salt comprises the following steps: 221g dicamba is dissolved in 1L toluene, stirred and heated to reflux, 104g tetramethylguanidine is added dropwise thereto, and the rate of addition is controlled during the dropwise addition to prevent After the violent flushing, after the dropwise addition, continue to reflux for 3 hours, stir and cool down to 20°C, filter with suction, and dry the filter cake to obtain dicamba tetramethylguanidine salt.
Embodiment 2
[0029] The preparation method of dicamba tetramethylguanidine salt comprises the following steps: 221g of dicamba is dissolved in 1.5L toluene, stirred and heated to reflux, 419.5g of tetramethylguanidine is added dropwise thereto, and the rate of addition is controlled during dropping to prevent After the dropwise addition is completed, continue to reflux for 4 hours, stir and cool down to 30°C, filter with suction, and dry the filter cake to obtain dicamba tetramethylguanidine salt.
Embodiment 3
[0031] The preparation method of dicamba tetramethylguanidine salt comprises the following steps: dissolving 221g of dicamba in 1.2L toluene, stirring and raising the temperature to reflux, adding tetramethylguanidine dropwise thereto, controlling the rate of addition during the dropwise addition, to prevent After the violent flushing, after the dropwise addition, continue to reflux for 3.5 hours, stir and cool down to 25°C, filter with suction, and dry the filter cake to obtain dicamba tetramethylguanidine salt.
[0032] The H NMR and C NMR data of the dicamba tetramethylguanidine salt obtained in Examples 1 to 3 are as follows:
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Abstract
The invention discloses a dicamba tetramethyl guanidine salt, a preparation method and applications thereof. According to the invention, the dicamba tetramethyl guanidine salt is obtained by carryingout a reaction on dicamba and tetramethyl guanidine, and integrates the advantages of dicamba and tetramethyl guanidine; the dicamba tetramethyl guanidine salt can promote the synthesis of nucleic acids and proteins in plants to make cells excessively split and elongate, so that tissues are deformed due to excessive growth so as to hinder substance transportation, cause weed death and achieve rapid effect; and based on the characteristics of large molecular weight, high safety and less volatilization of the dicamba tetramethyl guanidine salt, the dicamba tetramethyl guanidine salt is safe andenvironmentally friendly in the processes of processing, storage, transportation, construction and the like, and can effectively kill various broadleaf weeds in a wheat field in field application, improve the attachment rate of the liquid medicine on weed leaf surfaces, improve weeding activity and delay the resistance of weeds.
Description
technical field [0001] The invention relates to the technical field of herbicides, in particular to a dicamba tetramethylguanidine salt and a preparation method and application thereof. Background technique [0002] Wheat is the second largest grain crop in my country, accounting for 20% to 27% of the total area of grain crops in the country over the years, and its planting range covers almost all agricultural areas. The area of weed damage in my country's wheat fields accounts for 30% of the planting area, of which serious weed damage accounts for about 10%. Weed control in wheat fields is an important measure to ensure wheat production. There are many weeds in the wheat field, and they grow rapidly and have a large amount of growth. They compete with wheat for water, fertilizer, and space. Poor growth, affecting yield. General weeds have the characteristics of early maturation, irregularity, and segmental emergence, which is not conducive to control, and many weeds h...
Claims
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Application Information
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