A kind of preparation method of plant molluscicide luocarb

The technology of molluscicide and molluscicide, which is applied in the field of synthesis of known compounds, can solve problems such as not going deep into the process, and achieve the effects of process operation, low energy consumption and reduction of separation cost.

Active Publication Date: 2021-09-21
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, the scholar only produced tea saponin with a purity of 87.58% in a relatively mild environment and in a short period of time, and did not go deep into the process of preparing snails from tea saponin

Method used

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  • A kind of preparation method of plant molluscicide luocarb
  • A kind of preparation method of plant molluscicide luocarb
  • A kind of preparation method of plant molluscicide luocarb

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] 1, hydrolysis, calcification of oil saponin

[0055] 1.1 g of calcium hydroxide in three flasks, add 75 mL of deion, mix well, and weigh 8.3 g of oil tea saponin (mass fraction of 60%, oil-containing tea sapin 5g), stir mix and mix, It is heated to 40 ° C, stirring using a stirrer, stably reacting 12h, obtaining soil saponin calcium, wash 1 to 2 times with a small amount of deionized water. After filtration with vacuum pump, the saponin is placed in a vacuum drying tank for 12 h drying for 12 h, i.e., 6.4 g of dry saponin calcium, yield of 77.1%.

[0056] 2, saponin calcium acidification macrower

[0057] The saponin solid obtained by the previous step was dispersed with 100 ml of deionized water, and stirring was carried out with a magnetic stirring child, and the mass fraction was dripped at room temperature, and the soil-yellow solid was gradually dissolved, and the bottom of the solution was White calcium sulfate precipitate. When the pH is stabilized between 4 to 5, th...

Embodiment 2

[0061] 1, hydrolysis, calcification of oil saponin

[0062] Weigh 1.1 g of calcium hydroxide in three flasks, add 75 ml of deion, mix well, and weigh 8.3 g of oil tea saponin (mass fraction of 60%, oil-containing tea 5G) mixed, heating it To 50 ° C, the reaction was stably reacted for 12 h, and the soil-yellow saponin calcium was obtained, 1 to 2 times with a small amount of deionized water. After filtration with vacuum pump, the saponin was placed in a vacuum drying tank 50-75 ° C for 12 h, ie 7.1 g of dry saponin calcium, yield was 85.5%.

[0063] 2, saponin calcium acidification macrower

[0064] The saponin calcium obtained by the previous step is obtained in accordance with the operation steps in Example 1 to obtain a screw solution.

[0065] 3, snail refining

[0066] According to the operation step in Example 1, a sciile solution can be obtained from a sciile solid body 3.8 g, and the yield is 46%. The filtrate was distilled with Embodiment 1.

Embodiment 3

[0068] 1.1 g of calcium hydroxide in three flasks, add 75 mL of deion, mix well, and weigh 8.3 g of oil tea saponin (mass fraction of 60%, oil-containing tea sapin 5g), stir mix and mix, It is heated to 90 ° C. The stirrer was stirred, and the reaction was stirred at 12h, the saponin calcium precipitate was not obtained, and the reaction liquid became black and accompanied by a malodant, and the reaction solution was carried with the reaction solution. The lower reaction 12h can cause oil tea saponin deterioration.

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Abstract

The invention discloses a preparation method of a plant molluscicide luowei, which uses camellia saponin as raw material and utilizes Ca(OH) 2 Hydrolyzed camellia saponin, 2‑methyl‑2‑butenoic acid, acetic acid and Ca 2+ Form a soluble calcium salt, and the carboxyl group of the glycosyl part of camellia saponin also interacts with Ca 2+ Generate insoluble calcium salt saponin decarboxylation calcium precipitate, after filtration, insoluble saponin decarboxylation calcium precipitate is dispersed with deionized water, acidify calcium salt with sulfuric acid and filter to remove CaSO 4 Precipitation, the filtrate is subjected to vacuum distillation to obtain Spirovir H 2 b. The invention uses tea saponin as a raw material to obtain high-quality snails, turns excess camellia saponin into treasures, can be widely used in industrial production, and provides technical support for popularization of snails.

Description

Technical field [0001] The present invention relates to a method of synthesizing a known compound, in particular a method for preparing a plant molluscicide spiro Wei, tea saponin is as a starting material the plant molluscicide spiro K prepared by reacting the ester hydrolysis and isolated by . Background technique [0002] Schistosomiasis is harmful to the health of one of the most serious parasitic disease of humans, there are around more than 70 countries and regions of schistosomiasis epidemic, affecting a population of about 3.1 billion, about 200 million people infected died of the disease each year by up to many millions [1-2] . Schistosomiasis Control Practice shows that snails are the only intermediate host of schistosomiasis control snails can effectively control the spread of schistosomiasis, schistosomiasis and therefore prone areas, snail is one of the effective measures to prevent the direct schistosome infection. [0003] After years of research and practice, our ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07J63/00
Inventor 冯乙巳方耀浦同俊方满娣贾树寅朱旭于竞超
Owner HEFEI UNIV OF TECH
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