Unlock instant, AI-driven research and patent intelligence for your innovation.

Pyridazine compound and application thereof

A compound, pyridazine technology, applied in the field of pesticide compounds, can solve the problem that it is difficult to take into account the effects of weed control and crop safety, and achieve excellent weed control effect and excellent safety effect

Active Publication Date: 2022-03-04
NANKAI UNIV
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the compounds provided by the prior art are difficult to take into account the excellent weed control and crop (especially for crops such as rice, soybean and cotton) safety effects

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Pyridazine compound and application thereof
  • Pyridazine compound and application thereof
  • Pyridazine compound and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0080] Preferably, the preparation method of the compound of the structure shown in the formula (II) comprises: in the presence of the second solvent and the second alkali, the compound shown in the formula (IV) and the phosphorus oxychloride shown in the formula (V) react,

[0081]

[0082] The substituents in the compound represented by formula (IV) are correspondingly the same as those described above in the present invention.

[0083] Preferably, the preparation method of the pyridazinone with the structure shown in formula (IV) comprises: in the presence of a third solvent and a third base, combining the raw material shown in formula (IV) with the compound shown in formula (V) Hydrazine monohydrate reacts,

[0084] N 2 h 4 .H 2 O formula (VII).

[0085] The substituents in the compound represented by formula (IV) are correspondingly the same as those described above in the present invention.

[0086] Preferably, the preparation method of the raw material of the...

preparation example 1

[0111] Preparation Example 1: Preparation of Compound 2

[0112]

[0113] Preparation of material ii

[0114] In a 250mL two-necked bottle, add material 98mmol of material i and 0.5mL of 98wt% H 2 SO 4 , slowly add 100mL of ethanol under stirring at room temperature, and react at 80°C. After the reaction is complete as detected by TLC, the solvent is removed under reduced pressure.

[0115] Add 200 mL of saturated Na 2 CO 3 The aqueous solution was extracted with 200 mL of dichloromethane, and the organic phase was washed with saturated NaCl aqueous solution, then dried by adding anhydrous sodium sulfate, filtered, and desolvated under reduced pressure to obtain a slightly yellow transparent liquid, and the crude product was directly used for the next reaction.

[0116] Preparation of material iii

[0117] In a 250mL two-necked bottle, add the crude product material ii obtained in the previous step, add 100mL of CCl 4 Dissolve, add 9.8mmol of azobisisobutyronitrile th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of pesticide compounds, and discloses a pyridazine compound and application thereof, and the pyridazine compound has a structure as shown in a formula (I). The compound provided by the invention can generate a very excellent weeding effect at a low dosage, and shows excellent activity on annual gramineous weeds and broadleaf weeds.

Description

technical field [0001] The invention relates to the field of pesticide compounds, in particular to a pyridazine compound and an application thereof. Background technique [0002] The use of herbicides has brought good news to farmers. After long-term research, many herbicides have emerged. [0003] However, with the widespread and long-term use of pesticides, more and more weeds have become resistant to pesticides. The research and development of new pesticides has always been an important aspect of the research of pesticide chemists. [0004] Carotenoids in plants play an important role in improving light collection efficiency, widening the range of light collection, and protecting light. At the same time, it is also an important precursor of plant hormones such as abscisic acid, and plays an essential role in the metabolism of plants. [0005] Inhibiting the synthesis of carotenoids will cause the albinism of plants, lose their photoprotective effect, and eventually die....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C07D237/14A01N43/58A01P13/00
CPCC07D237/14A01N43/58Y02P20/55
Inventor 席真许寒杨丽君王大伟张迪马德君李永红刘斌
Owner NANKAI UNIV