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Process for preparing ethyl trichosanate and synergist of trichosanic acid ethyl ester as herbicide

A technology for the preparation of ethyl trichonate and its preparation process, which is applied in the field of the preparation process and its use as a synergist for herbicides to prepare ethyl trichonate, which can solve the problems of low product utilization and low value, and achieve improved Pharmacological efficacy, little harm and good biodegradability

Inactive Publication Date: 2015-03-18
安阳天尊生物工程股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The shell, flesh and seeds of Trichosanthes chinensis have different effects and medicinal value respectively. Trichosanthes grandis has the effects of moistening the lungs, resolving phlegm and dispelling stagnation, and quenching thirst. It is clinically used for coronary heart disease, angina pectoris, arrhythmia, diabetes, etc. For the treatment of various diseases, the industry of Trichosanthes planting and processing in my country is also constantly developing and growing. Trichosanthes oil fatty acid is a product in the process of Trichosanthes processing industry. At present, the utilization rate of this product is low and the value is not high. High, this phenomenon affects the comprehensive development and utilization of the value of Trinidad

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Filtration: use conventional filtration equipment and processes known in the industry to remove solid impurities, mechanically suspended solids and some peptized substances contained in Trichosanthes oil fat;

[0021] (2) Acidification: Put the filtered oil and concentrated sulfuric acid with a mass concentration of 98% into the reaction vessel according to the mass ratio of 1:1, stir and heat to 105°C, and keep it warm for 1 hour, then stop stirring, and stand for 1.5 After 1 hour, release the lower layer of acid solution, wash the upper layer of fatty acid with water to a pH value of 4~5, heat to 230°C under a vacuum of 0.09MPa and stir for 2 hours for dehydration;

[0022] (3) Esterification: Put the fatty acid and ethanol treated in step (2) into the reaction kettle at a weight ratio of 6:1, then add concentrated sulfuric acid with a mass concentration of 98%, and heat and reflux for 15 hours under stirring , then distill the ethanol out, heat to 110°C and stop ...

Embodiment 2

[0026] (1) Filtration: use conventional filtration equipment and processes known in the industry to remove solid impurities, mechanically suspended solids and some peptized substances contained in Trichosanthes oil fat;

[0027] (2) Acidification: put the filtered Trichosanthenic acid and concentrated sulfuric acid with a mass concentration of 80% into the reaction vessel according to the mass ratio of 1:8, stir and heat to 80°C, keep it warm for 1 hour, and then let it stand for 1 After 1 hour, release the lower layer of acid solution, wash the upper layer of fatty acid with water to a pH value of 4~5, heat to 120°C under a vacuum of 0.08MPa and stir for 3 hours for dehydration;

[0028] (3) Esterification: Put the fatty acid and ethanol treated in step (2) into the reactor at a weight ratio of 8:1, then add concentrated sulfuric acid with a mass concentration of 98%, and heat to reflux for 12 hours while stirring. Then the ethanol was distilled off, heated to 110°C and stopp...

Embodiment 3

[0032] Embodiment 3: the influence of trichomonate ethyl ester on the activity of sulcotrione

[0033] The dosage of ethyl trichomonate is 1% of the volume of the spraying solution. After 7 days of spraying, the fresh weight control effect was investigated. The result: the mixed use of ethyl trichocarp and sulcotrione 300g / hm2 is more effective than single use on grass weeds: barnyardgrass The control effects of grass and goosegrass increased by 59.5% and 55.0% respectively; the control effects of broad-leaved weeds Amaranthus retroflexus and purslane increased by 40.5% and 43.5% respectively.

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PUM

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Abstract

The invention discloses a process for preparing ethyl trichosanate and a synergist of ethyl trichosanate as a herbicide, and belongs to the field of chemistry. The preparation process comprises the following steps: with recovered trichosanthes kirilowii maxim oil fatty acid as a raw material, filtering, acidifying, esterifying, purifying and the like. According to the synergist of ethyl trichosanate as the herbicide, the amount of ethyl trichosanate is 0.5%-1.5% of volume of herbicide spray liquid. The preparation process is mild in condition and environmental friendly; and the obtained product ethyl trichosanate is used as a novel efficient and low-temperature resistant herbicide synergist and has a good effect.

Description

technical field [0001] The invention relates to a process for preparing trichosanthenic acid ethyl ester from trichosanthenic acid and an application, in particular to a process for preparing trichosanthenic acid ethyl ester and its use as a synergist for herbicides, belonging to the field of traditional Chinese medicine chemistry. Background technique [0002] Cuilou, aliases: Gualou, Yaogua, Cuiloudan, Guoku, Wangpu, Dilou, Zeju, Zeye, Wangbai, Tiangua, Zegu, Cucumber, Tianyuanzi, Persimmon Melon, Dog Bitter Melon, Wild bitter gourd, Du gourd, pot-bellied melon, duck dung melon, arnica gourd, big round melon, hanging melon, etc. belong to the genus Cucurbitaceae. Mainly produced in Anhui, Shandong, Henan, Sichuan, Jiangsu, Zhejiang, Hebei, Shanxi, Shaanxi, Fujian, Guangdong, Guangxi and other places are also produced. Trichosanthes whole body has high medicinal value. The fruit is called Trichosanthes chinensis and Trichosanthes bark as medicine, the seeds are called Tric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/587C07C67/08A01N37/06A01P13/00
CPCA01N37/06C07C67/08C07C69/587
Inventor 杨保成谢永轩
Owner 安阳天尊生物工程股份有限公司
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