Weeding composition containing propanil and tembotrions

A herbicidal composition and a technology of cyclosulfonone are applied in the field of pesticides, and can solve the problems of rolling loss and impermeability of pharmaceuticals

Pending Publication Date: 2022-01-21
安徽喜田生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) Phenylpropionic acid is added to a three-necked flask, catalyst is added, toluene is used as a solvent, trichloromethyl carbonate is ground into a three-necked flask, and intermediate A is obtained by vacuum distillation, and dichloromethane is added to the three-necked flask Methane is used as a solvent, eugenol, 4-dimethylaminopyridine and triethylamine are added, intermediate A is added dropwise in an ice-water bath to obtain intermediate B, intermediate B and trimethoxysilane are added

Method used

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  • Weeding composition containing propanil and tembotrions
  • Weeding composition containing propanil and tembotrions
  • Weeding composition containing propanil and tembotrions

Examples

Experimental program
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Effect test

Embodiment 1

[0042] This embodiment is a herbicidal composition containing propanil and tembotrione, comprising the following components in parts by weight:

[0043] 20 parts of propanil, 10 parts of tembotrione, 20 parts of filler or solvent, 5 parts of penetrant, and 5 parts of defoamer;

[0044] Wherein the penetrant is prepared by the following steps:

[0045] S1: Add phenylpropionic acid to a three-necked flask, add catalyst, and toluene as a solvent, grind trichloromethyl carbonate and add it to a three-necked flask, control the temperature at 20°C, stir for 5 minutes, raise the temperature to 60°C, and control the heating rate 3°C / min, reacted for 4h, and distilled under reduced pressure to obtain intermediate A;

[0046] S2: Add dichloromethane as a solvent to a three-necked flask, add eugenol, 4-dimethylaminopyridine and triethylamine, stir mechanically at 300r / min, control the system temperature in an ice-water bath at 0°C, add intermediate A dropwise, and control The dropping ...

Embodiment 2

[0054] This embodiment is a herbicidal composition containing propanil and tembotrione, comprising the following components in parts by weight:

[0055] 20 parts of propanil, 20 parts of tembotrione, 30 parts of filler or solvent, 6 parts of penetrant, and 5 parts of defoamer;

[0056] Wherein the penetrant is prepared by the following steps:

[0057] S1: Add phenylpropionic acid to a three-necked flask, add catalyst, and toluene as a solvent, grind trichloromethyl carbonate and add it to a three-necked flask, control the temperature at 20°C, stir for 5 minutes, raise the temperature to 60°C, and control the heating rate 3°C / min, reacted for 4h, and distilled under reduced pressure to obtain intermediate A;

[0058] S2: Add dichloromethane as a solvent to a three-necked flask, add eugenol, 4-dimethylaminopyridine and triethylamine, stir mechanically at 300r / min, control the system temperature in an ice-water bath at 0°C, add intermediate A dropwise, and control The dropping ...

Embodiment 3

[0066] This embodiment is a herbicidal composition containing propanil and tembotrione, comprising the following components in parts by weight:

[0067] 40 parts of propanil, 20 parts of tembotrione, 30 parts of filler or solvent, 5 parts of penetrant, and 6 parts of defoamer;

[0068] Wherein the penetrant is prepared by the following steps:

[0069] S1: Add phenylpropionic acid to a three-necked flask, add catalyst, toluene as a solvent, grind trichloromethyl carbonate into a three-necked flask, control the temperature at 25°C, stir for 15 minutes, raise the temperature to 65°C, and control the heating rate 5°C / min, react for 5h, and distill under reduced pressure to obtain intermediate A;

[0070] S2: Add dichloromethane as a solvent to a three-necked flask, add eugenol, 4-dimethylaminopyridine and triethylamine, mechanically stir at 350r / min, control the temperature of the system in an ice-water bath at 6°C, add intermediate A dropwise, and control The dropping rate was ...

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Abstract

The invention discloses a weeding composition containing propanil and tembotrions, and relates to the field of pesticides. Phenylpropionic acid is added into a three-necked flask, a catalyst and toluene are added as a solvent, trichloromethyl carbonate is ground and added into the three-necked flask, and reduced pressure distillation is performed to obtain an intermediate A. The problem that when A pesticide liquid is attached to target plant leaves, due to the influence of physicochemical properties of the liquid medicine, the pesticide rolls off on the surfaces of the plant leaves, or is separated out through evaporation and crystallization on the target surfaces and cannot permeate into cell walls of resistant barnyard grass and resistant moleplant leaves, and therefore the pesticide effect is limited is solved. The pesticide liquid can reach the maximum coverage on target plant leaves within an extremely short time, so that the pesticide liquid can enter a plant body through morphological structures such as plant pores and skin pores, and the maximum holding capacity and the expansion diameter of the weeding composition on the leaf surfaces are increased, so that the pesticide effect is improved, and the fresh weight control effect on barnyard grass and goosegrass is achieved.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a herbicidal composition containing propanil and tembotrione. Background technique [0002] The molecular formula of propanil is C 9 h 9 Cl 2 NO, is a highly selective contact herbicide. It is safe for rice seedlings and has a strong contact effect on resistant barnyardgrass and resistant daughter. It can also control duckweed, cress, crabgrass and foxtail Such as gramineous and dicotyledonous weeds, tembotrione is a p-hydroxyphenylpyruvate dioxygenase inhibitor, by inhibiting the synthesis of p-hydroxyphenylpyruvate dioxygenase, resulting in the accumulation of tyrosine, making plastoquinone The biosynthesis of tocopherols and tocopherols is hindered, which in turn affects the biosynthesis of carotenoids, and weeds appear chlorotic, yellow and dead, tembotrione can protect crops from ultraviolet rays, has broad-spectrum, fast-acting characteristics, and is compatible with The envir...

Claims

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Application Information

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IPC IPC(8): A01N41/10A01N37/22A01N25/30A01P13/00C07F7/18C08G77/46
CPCA01N41/10A01N37/22A01N25/30C07F7/1804C07F7/1876C08G77/46
Inventor 郭晓刚沈雨
Owner 安徽喜田生物科技有限公司
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