Process for preparing dimethomoph

A technology of dimethomorph and synthesizing dimorpholine, applied in the direction of organic chemistry, etc., can solve the problem of time-consuming and labor-intensive

Inactive Publication Date: 2005-06-29
JIANGSU GENGYUN CHEM CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

This type of method requires 8 to 12 hours of reaction time, which is time-consuming and laborious.

Method used

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  • Process for preparing dimethomoph
  • Process for preparing dimethomoph
  • Process for preparing dimethomoph

Examples

Experimental program
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Embodiment 1

[0027] Embodiment 1, with reference to figure 1 :

[0028] Preparation of acetylmorpholine:

[0029] Put the measured xylene and acetic anhydride into the enamel reaction kettle, turn on the cooling water and stir, add dropwise the morpholine that has been pumped into the high-level tank at room temperature, slowly raise the temperature to 110°C after the dropwise addition, and then pour in after reflux for 5 hours. Desolventization of the still and by-product acetic acid, the remaining part in the still is the intermediate acetylmorpholine, the content is 99%, and the yield is ≥90.2%

[0030] batch number

[0031] Preparation of dimethomorph:

[0032] Put xylene, E-benzophenone and sodium amide into the reaction kettle, stir and add the acetylmorpholine that was pumped into the high level tank in advance when the temperature is raised to 100°C, after the dropwise addition, heat up to reflux and keep it warm for 2 hours, and then cool down to 80 After ℃, put the w...

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Abstract

Disclosed is a method for preparing enoyl morpholine, its steps include: prepare diacetyl morpholine, agtate xylen and acetic anhydride and add morpholine into it in normal temperature which is then increased to 110deg.C, keep the temperature for five hours, it enters into distillation still and generate the side product acetic acid, in the distillation still remains intermediate diacetyl morpholine whose content is 99% and productivity í¦90.2%. The preparation of enoyl morpholine: add xylen, E-benzophenone and sodium amide into reaction kettle, which is then agtatered and its temperature is raised to 100deg.c add 2, then keep the temperature be 110deg.c, decrease the temperature to be 80deg.c and separate waste alkali solution solution through washing, the recycle xylen when the solution is neatron 13, aftering being dried, acquire enoyl morpholine whose contentí¦95%and productivityí¦76.6%. Since it uses intermediate to replace tertiary sodium butoxide sodium butylatein the conventional technology, the reacting speed is increased greatly, the time is shorten to be two hours and the productive efficiency is increase remarkably as well.

Description

technical field [0001] The invention relates to a pesticide production process, in particular to a preparation method of dimethomorph. Background technique [0002] Dimethomorph is an ideal high-efficiency broad-spectrum morpholine fungicide. It has a high bactericidal effect on oomycetes on grapes, potatoes and tomatoes, especially Peronosporaceae and Phytophthora. Phytophthora and late blight of potato etc. It has the characteristics of less dosage, long duration, safe use, etc., and has a good market prospect. [0003] The molecular formula of the compound: C 21 h 22 ClNO 4 ; [0004] English common name: dimethomorph; [0005] CAS accession number: 110488-70-5; [0006] Chemical name: (E, Z) 4-[3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl]morpholine; (E, Z) 4-[3 -(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloyl]morpholine; [0007] Other Chinese names: Anke; [0008] Structural formula: [0009] [0010] Physical and chemical properties: [0011] Thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D295/16
Inventor 李泽方徐韶康
Owner JIANGSU GENGYUN CHEM CO LTD
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