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Preparation method of epoxiconazole

A technology of epoxiconazole and raw materials, which is applied in the field of preparation of epoxiconazole, can solve the problems of low content and yield of target products, cumbersome reaction operations, and a large amount of three wastes, and achieve low toxicity, simple process, and easy-to-obtain raw materials Effect

Pending Publication Date: 2019-12-03
JIANGSU SEVENCONTINENT GREEN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The synthesis process of epoxiconazole is relatively mature, and its traditional synthesis method mainly has the problems of cumbersome reaction operation, a large amount of three wastes, high cost, low content and yield of the target product, so it is urgent to find a more efficient and simple method for synthesis Epoxiconazole, making the synthesis of epoxiconazole safer and more environmentally friendly

Method used

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  • Preparation method of epoxiconazole
  • Preparation method of epoxiconazole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Add 300g of toluene, 160g of raw material A, 54.4g of raw material B, and 5.5g of catalyst cetyltrimethylammonium chloride into a 1000ml round bottom flask, heat up and stir, keep warm at 60°C for about 5 hours, until the reaction is complete, stop After reaction, eluted with water, recrystallized to obtain 140.8 g of the product, with a yield of 95.2%.

Embodiment 2

[0027] Add 300g of toluene, 160g of raw material A, 54.4g of raw material B, and 5.5g of catalyst tetradecyltrimethylammonium chloride into a 1000ml round bottom flask, heat up and stir, and keep warm at 60°C for about 5 hours until the reaction is complete and stop After reaction, eluted with water, and recrystallized to obtain 140.8 g of the product, the yield was 95.0%.

Embodiment 3

[0029] Add 300g of toluene, 160g of raw material A, 54.4g of raw material B, and 2.4g of catalyst diethylene glycol dimethyl ether into a 1000ml round bottom flask, heat up and stir, and keep warm at 60°C for about 5 hours until the reaction is complete, stop the reaction, and water After the solvent was eluted, 141.1 g of the product was obtained by recrystallization, with a yield of 95.4%.

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Abstract

The invention relates to a preparation method of epoxiconazole. Epoxiconazole is prepared from a raw material A and a raw material B in the presence of a catalyst and a solvent, and a structural formula of the raw material A and a structural formula of the raw material B are the structural formula of epoxiconazole. The process is relatively simple, raw materials are easy to obtain, low in toxicityand low in cost, little three wastes are produced, the content and yield of target products are higher, and the method is suitable for industrial production.

Description

technical field [0001] The invention specifically relates to a preparation method of epoxiconazole. Background technique [0002] Epoxiconazole is a triazole fungicide, which has a good control effect on a series of cereal crops such as blight, powdery mildew, eye striae and more than ten kinds of diseases, and can control sugar beet, peanut, rapeseed, turf , coffee, rice and fruit trees and other diseases. It not only has good protective, therapeutic and eradicating activities, but also has systemic and better residual activities. [0003] Features and uses: Epoxiconazole is a systemic triazole fungicide, and its active ingredient, epoxiconazole, inhibits the synthesis of ergosterol and hinders the formation of the cell wall of bacteria. 14-dencthylase) has a strong affinity, compared with currently known fungicides, it can more effectively inhibit pathogenic fungi. Epoxiconazole can increase the activity of vantinase in crops, leading to the contraction of fungal hausto...

Claims

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Application Information

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IPC IPC(8): C07D405/06
CPCC07D405/06
Inventor 刘玉超吴天宇陶亚春朱敏张虎
Owner JIANGSU SEVENCONTINENT GREEN CHEM CO LTD
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