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L-pyroglutamic acid metal complex and preparation method and application thereof

A technology of metal complexes and pyroglutamic acid, which is applied in the field of pesticides, can solve the problems of insufficient control effects, and achieve the effects of no three wastes, safe crops, and simple processes

Inactive Publication Date: 2018-12-21
吴文君 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Although L-pyroglutamic acid can effectively control diseases such as cucumber downy mildew, such as cucumber downy mildew (Pseudoperonospora cubensis), grape downy mildew (Plasmopara viticola), potato late blight (Phytophthora infestans), pepper phytophthora (Phytophthora capsici Leonian), tomato late blight fungus (Phytophthora infestans (Mont.) DeBary) shows high activity, has the potential to be developed into an agricultural fungicide, but its control effect is still not as good as the current mainstream chemical synthetic fungicides

Method used

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  • L-pyroglutamic acid metal complex and preparation method and application thereof
  • L-pyroglutamic acid metal complex and preparation method and application thereof
  • L-pyroglutamic acid metal complex and preparation method and application thereof

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preparation example Construction

[0031] The present invention also provides a preparation method of the L-pyroglutamic acid metal complex having the structure shown in formula I, comprising the following steps:

[0032] mixing L-pyroglutamic acid, solvent and sodium hydroxide to obtain L-pyroglutamic acid solution;

[0033] The inorganic metal salt is mixed with a solvent to obtain an inorganic metal salt solution, and the inorganic metal salt is copper chloride dihydrate or zinc sulfate heptahydrate;

[0034] Adding the inorganic metal salt solution dropwise to the L-pyroglutamic acid solution, the molar ratio of the L-pyroglutamic acid to the inorganic metal salt is 4 to 2:1 to obtain a compound having the structure shown in formula I L-pyroglutamic acid metal complexes.

[0035] The invention mixes L-pyroglutamic acid, solvent and sodium hydroxide to obtain L-pyroglutamic acid solution. In the present invention, the pH value of the L-pyroglutamic acid solution is preferably 7-8. The present invention do...

Embodiment 1

[0054] Weigh 65.0 g (0.5 mol) of L-pyroglutamic acid into a 1000 mL round bottom flask, add 325 mL of methanol, and stir to dissolve. Use 20% sodium hydroxide solution to adjust the pH value of the L-pyroglutamate solution to 7, weigh 42.5g (0.25mol) of copper chloride dihydrate and put it into a 500mL beaker, add 200mL methanol, stir and transfer to a 250mL dropping funnel, Under stirring, slowly add the cupric chloride solution to the L-pyroglutamic acid solution dropwise, stir for 1 hour after the dropwise addition is complete, spin evaporate to recover 400mL of methanol, let cool and filter, wash the filter residue with 200mL of absolute alcohol, that is Copper L-pyroglutamate is available.

[0055] Carry out X-ray single crystal diffraction to the copper L-pyroglutamate that the embodiment of the present invention 1 makes, and single crystal data are as shown in Table 1, and structural diagram is as follows figure 1 shown by figure 1 And table 1 as can be seen, the copp...

Embodiment 2

[0067] Same as Example 1, the only difference is that copper chloride dihydrate is replaced by zinc sulfate heptahydrate, the mol ratio of L-pyroglutamic acid and zinc sulfate heptahydrate is 4:1, and zinc L-pyroglutamate is obtained .

[0068] Carry out X-ray single crystal diffraction to the L-pyroglutamate zinc that the embodiment of the present invention 2 makes, and single crystal data are as shown in table 4, and structural diagram is as follows figure 2 shown by figure 2 And table 4 as can be known, the zinc L-pyroglutamate that present embodiment makes has the structure shown in formula I.

[0069] X-ray single crystal diffraction data of table 4L-zinc pyroglutamate

[0070]

[0071] Experiment on Controlling Cucumber Downy Mildew in Potted Plants

[0072] There are 2 cucumber seedlings per pot, the variety is Changchun Mici, and the test is carried out when the true leaves reach 2-3 leaves. The test set L-pyroglutamic acid 500ppm, 1000ppm; L-pyroglutamate zin...

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Abstract

The invention provides an L-pyroglutamic acid metal complex with a structure shown in a formula I, and belongs to the technical field of pesticides. The L-pyroglutamic acid metal complex with the structure shown in the formula I has the advantages that the structure is simple, the good preventing and control effects are realized on the diseases and pests of crops, and the safety effect is realizedon the crops; proofed by data, the L-pyroglutamic acid metal complex has good preventing and controlling effects on cucumber downy mildew, cucumber powdery mildew, grape downy mildew and potato lateblight. The formula I is shown in the attached figure.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to L-pyroglutamic acid metal complexes and their preparation methods and applications. Background technique [0002] In the prior art, in the process of screening botanical fungicides, an amino acid compound was isolated from the extract of Disporopsisaspera, which was identified as L-pyroglutamic acid. The structural formula is as follows: [0003] [0004] Although L-pyroglutamic acid can effectively control diseases such as cucumber downy mildew, such as cucumber downy mildew (Pseudoperonospora cubensis), grape downy mildew (Plasmopara viticola), potato late blight (Phytophthora infestans), pepper phytophthora (Phytophthora capsici Leonian), tomato late blight (Phytophthora infestans (Mont.) DeBary) show high activity, have the potential to be developed into agricultural fungicides, but their control effect is still not as good as the current mainstream chemical synthetic f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D207/28A01N43/36A01P3/00
CPCA01N43/36C07D207/28
Inventor 吴文君张继文
Owner 吴文君
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