Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Piperazinedione derivative and preparation and application thereof

A compound and unsubstituted technology, applied in the field of piperazine diketone derivatives and its preparation, can solve problems such as increased use of pesticides, increased cost of pest control, environmental and ecological damage, etc.

Active Publication Date: 2014-10-15
EAST CHINA UNIV OF SCI & TECH
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One is the safety of pesticides. Some traditional pesticides have been eliminated due to their toxicity and impact on the environment and ecology. Phosphorus, omethoate, etc. and highly toxic carbamate insecticides such as aldicarb, carbofuran, methomyl, etc. are increasingly banned. At present, these important insecticide varieties have been banned in the world. disabled or about to be disabled
[0005] The second is the problem of insecticide resistance of pests. Due to the long-term abuse of chemical insecticides, the resistance of pests has increased. On the one hand, the amount of insecticides has continued to increase, forming a vicious circle and causing great damage to the environment and ecology; On the other hand, the cost of pest control continues to rise

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
  • Piperazinedione derivative and preparation and application thereof
  • Piperazinedione derivative and preparation and application thereof
  • Piperazinedione derivative and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0056] A particularly preferred preparation process is as follows:

[0057]

[0058] (5) Dissolve triphosgene (BTC) in an inert solvent (such as dichloromethane, 1,2-dichloroethane, chloroform, carbon tetrachloride, DMF, etc.), and compound 6 and an organic base are dissolved in an inert solvent ( (such as dichloromethane, 1,2-dichloroethane, chloroform, carbon tetrachloride, etc.), add triphosgene in an inert solvent (such as dichloromethane) solution at low temperature to obtain compound 7.

[0059] (6) Drop compound 7 into a solution of compound 5 and an organic base in an inert solvent (such as dichloromethane, 1,2-dichloroethane, chloroform, carbon tetrachloride, DMF, etc.) to obtain compound 10.

[0060] (7) Dissolving compound 6, carbon disulfide, and an organic base into an inert solvent (such as THF, toluene, methylene chloride, 1,2-dichloroethane, chloroform, carbon tetrachloride, etc.) solution to obtain compound 8 , adding triphosgene to give compound 9.

[00...

Embodiment 1

[0096] Embodiment 1: the synthesis of piperazine diketone intermediate 5a

[0097]

[0098] (1) Take ornithine hydrochloride 1a (337mg, 2mmol), di-tert-butyl dicarbonate ((Boc) 2 O) (1310mg, 6mmol), triethylamine (Et 3 N) (404mg, 4mmol) was dissolved in 6ml of acetone and 6ml of water, stirred at room temperature, followed by TCL. After the reaction, the acetone was distilled off under reduced pressure, and extracted three times with dichloromethane. The organic phase was washed with saturated brine, dried over anhydrous magnesium sulfate, and the solvent was removed by rotary evaporation under reduced pressure to obtain the crude product of compound 2a.

[0099] (2) In a 100ml round bottom flask, add the crude product of compound 2a obtained in the first step reaction, tryptophan methyl ester hydrochloride (1019mg, 4mmol), then add triethylamine (6mmol), HOBt (297mg, 2.2mmol), EDCl (460mg, 2.4mmol), add 30ml of dichloromethane, stir in ice bath for 1 hour, and then stir...

Embodiment 2

[0101] Embodiment 2: the synthesis of piperazine diketone urea compound 10a-1

[0102]

[0103] Into a 50ml round bottom flask was added triphosgene (BTC) (223mg, 0.75mmol), dissolved in 5ml of dichloromethane. Then aniline 6a (140mg, 1.5mmol) and triethylamine (152mg, 1.5mmol) were dissolved in 5ml of dichloromethane, added dropwise to the previous flask, stirred in an ice bath, dripped for about half an hour, and stirred at room temperature (TLC tracking reaction) to obtain compound 7a. Take another 50ml round bottom flask, dissolve compound 5a (300mg, 1mmol) in 1ml DMF, add triethylamine (101mg, 1mmol), and stir magnetically. Slowly drop the previous reaction into the flask and react at room temperature. After the dropwise addition, the reaction was complete (TLC followed the reaction). After removing the solvent in the reaction system by distillation under reduced pressure, and washing with water, the obtained crude product was separated and purified by column chroma...

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 discloses a piperazinedione derivative and preparation and application thereof. Specifically, the invention discloses a compound with structure as shown in formula I, or pharmaceutically acceptable salt or agrochemically acceptable salt thereof. The compound has excellent insecticidal activity and can be used as the human 5-HT2a receptor stimulant, and detailed definition of the compound of the formula I refers to specification.

Description

technical field [0001] The invention belongs to the field of pesticides and medicines. Specifically, the present invention relates to a diketone piperazine derivative and its preparation and use. Background technique [0002] Insecticides are the main means of controlling pests and play a very important role in modern agriculture. Most of the currently used insecticides are nerve agents, for example: organophosphorus insecticides and carbamate insecticides mainly inhibit the activity of acetylcholinease in insects, causing insect poisoning and death; Insecticides are nerve agents, and their toxicological mechanism is considered to be directly interacting with the sodium ion channel on the nerve membrane to produce toxic effects; neonicotinoid insecticides are recognized as a kind of acetylcholine receptor poison, which acts on Insecticides of acetylcholine receptors. [0003] However, in the past 20 to 30 years, great changes have taken place in the pesticide market struc...

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): C07D403/06C07D241/08C07D401/14C07D417/14C07D409/14C07D405/14A01N47/30A01N47/36A01N43/60A01P7/04A01P5/00
CPCC07D403/06A01N43/60A01N47/30A01N47/36C07D241/08C07D401/14C07D405/14C07D409/14C07D417/14
Inventor 宋恭华孙海洋王佳毅黄瑾李晖张小灵
Owner EAST CHINA UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com