New preparation method of herbicide glyphosate

A solvent and new process technology, which is applied in the new field of herbicide glyphosate preparation, can solve the problems of polluting the environment and increasing production costs, and achieve the effects of reducing production costs, reducing waste water discharge, and reducing waste gas discharge

Inactive Publication Date: 2010-11-17
李坚
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented method uses different starting materials for producing various chemical compounds without generating harmful gases or other substances during manufacturing. It also includes reducing costs associated with exhaustion from certain components used while still being effective at making desired products. Additionally, this technology can be applied on multiple types of molecules such as drugs and biological agents due to their compatibility between these ingredients.

Problems solved by technology

This patent describes how stable technical solutions exist when producing certain types of molecules called glyphonitrile (CAS No.: 7893-74-8). These molecular structures include aminomycetes or cyclohexane rings with carboxylic acids attached at specific positions within them. They also contain sulfur atoms which make up some parts of their structure. By reacting formaldehydes, trimacrolidone, or diphenoxytetramisulfonic acid with ethynesulfonyl hydrazones like guaazinetrione under basic conditions, they form various products such as glyphonylate esters.

Method used

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  • New preparation method of herbicide glyphosate
  • New preparation method of herbicide glyphosate
  • New preparation method of herbicide glyphosate

Examples

Experimental program
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Effect test

Embodiment 1

[0060] Molecular ratio: glycine: formaldehyde: hydrochloric acid: phosphorus trichloride = 1:2:2:1.02~1.05

[0061] Put 100 grams of 95% glycine and 304 grams of 30% hydrochloric acid into a four-necked reaction bottle at one time, start stirring, control the temperature at about 60°C, and add 211 grams of 36% formaldehyde dropwise. Turn on the vacuum and distill water, hydrochloric acid and formaldehyde as much as possible at 60 ° C. The distillation substrate is hydroxymethylglycine hydrochloride. Then, add 30 grams of N,N-dimethylformamide solvent at room temperature, and add to the distillation substrate Slowly add 181 grams of 98% phosphorus trichloride dropwise, control the temperature at about 74°C and keep it warm for 2 hours, then under high vacuum, try to distill off the solvent and excess phosphorus trichloride, and the distillation substrates are I and II Then, slowly add 80 grams of pure water under normal pressure, control the temperature at 90-110°C, hydrolyze f...

Embodiment 2

[0063] Molecular ratio: sodium hydroxymethylglycine: phosphorus trichloride = 1: 1 ~ 1.02

[0064] Put 100 grams of 98% phosphorus trichloride and 145 grams of N,N-dimethylformamide into the reaction bottle at one time, start stirring, control the temperature at about 25°C, and slowly add anhydrous sodium hydroxymethylglycinate solid 165 gram, keep warm for 1 to 2 hours, then, at about 20°C, filter out the NaCl solid generated, filter the mother liquor and return to the reactor, turn on the vacuum, and try to evaporate the N,N-dimethylolformamide solvent and excess Phosphorus trichloride, the distillate can be applied mechanically, and the distillation substrate is the new compound mixture of W and G. Then, under normal pressure, add 100 grams of water to the distillation substrate, control the temperature at 60-110°C, and perform the hydrolysis reaction for 2 ~8 hours, then, turn on the vacuum, distill hydrochloric acid and water as far as possible, the distillation substrate...

Embodiment 3

[0066] Molecular ratio: glycine: formaldehyde: HCl: phosphorus trichloride = 1:2~4:0~1:1

[0067] Put 100 grams of 95% glycine and 100 grams of pure water into the reaction bottle at one time, start stirring, control the temperature at about 60°C, and observe the transparency of the reaction system, then slowly add 317 grams of 36% formaldehyde dropwise, and keep the temperature for 4 hours. Turn on the vacuum, steam out water as much as possible, steam out excess hydrochloric acid and excess formaldehyde, and the distillation substrate is N, N——dimethylolglycine. Then, add 50 grams of anhydrous ethyl acetate to the distillation substrate, control the temperature at about 40°C, slowly add 177 grams of 98% phosphorus trichloride dropwise, keep the reaction for 1 hour, and then under high vacuum, try to distill out Solvent and excess phosphorus trichloride, the distillation substrate is the new compound mixture of C and D, 280 grams of 60% methanol aqueous solution is added to t...

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Abstract

The invention relates to a new preparation method of herbicide glyphosate by using phosphorus trichloride and hydroxymethyl glycinate or sodium hydroxymethylglycinate, or phosphorus trichloride and N,N-dihydroxymethylglycinate or iminodiacetonitrile as raw materials. In the method, the glyphosate or glyphosine is prepared by using a new compound produced by the mutual reaction among the raw materials as an intermediate through a further hydrolysis reaction. Compared with the traditional process for producing the glyphosate or the glyphosine, the production cost is reduced by more than 15%, and the whole production process can reach a clean production process standard with ultra low discharge of waste water.

Description

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Claims

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Application Information

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Owner 李坚
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