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Chloridized 1-arginyl methyl-3-vinyl imidazole ionic liquid and preparation method thereof

A technology of vinylimidazole and ionic liquid, applied in the direction of organic chemistry, can solve the problems of volatile recovery, difficulty, toxicity, etc., and achieve the effect of simple reaction steps and easy operation

Inactive Publication Date: 2019-04-16
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional cellulose solvents are toxic, volatile and difficult to recycle.

Method used

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  • Chloridized 1-arginyl methyl-3-vinyl imidazole ionic liquid and preparation method thereof
  • Chloridized 1-arginyl methyl-3-vinyl imidazole ionic liquid and preparation method thereof
  • Chloridized 1-arginyl methyl-3-vinyl imidazole ionic liquid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A preparation method of chlorinated 1-aminoacylmethyl-3-vinylimidazole ionic liquid, the specific process is:

[0038] 1) Weigh 9.411g of 1-vinylimidazole, that is, 0.1mol of 1-vinylimidazole, and add it to 94.11g of ethanol solution to obtain solution 1;

[0039] 2) Add 12.143 g of triethylamine, that is, 0.12 mol of triethylamine dropwise to solution 1, and stir for 10 minutes to obtain solution 2;

[0040] 3) Dissolve 11.221g of 2-chloroacetamide, that is, 0.12mol of 2-chloroacetamide, in 56.105g of ethanol solution under heating in a water bath at 60°C. The amide solution was added dropwise to solution 2, the heating temperature was 70°C, the magnetic stirring speed was 400r / min, and the reaction time was 3h to obtain solution 3;

[0041] 4) Distill solution 3 under reduced pressure to remove the solvent in the reaction, then extract it with anhydrous ether three times, put the product in a vacuum drying oven, and dry it for 24 hours at a temperature of 80°C and a ...

Embodiment 2

[0043] A preparation method of chlorinated 1-aminoacylmethyl-3-vinylimidazole ionic liquid, the specific process is:

[0044] 1) Weigh 9.411g of 1-vinylimidazole, that is, 0.1mol of 1-vinylimidazole, and add it to 94.11g of ethanol solution to obtain solution 1;

[0045] 2) Add 11.131 g of triethylamine, i.e. 0.11 mol of triethylamine, dropwise to solution 1, and stir to obtain solution 2;

[0046] 3) Dissolve 10.286g of 2-chloroacetamide, that is, 0.11mol of 2-chloroacetamide, in 51.43g of ethanol solution under heating in a water bath at 60°C. The amide solution was added dropwise to solution 2, the microwave heating temperature was 70°C, the microwave radiation power was 300W, the magnetic stirring speed was 400r / min, and the reaction time was 3h to obtain solution 3;

[0047]4) Distill the solution 3 under reduced pressure to remove the solvent in the reaction, then extract it with toluene for 3 times, put the product in a vacuum drying oven, and dry it for 24 hours at a ...

Embodiment 3

[0049] A preparation method of chlorinated 1-aminoacylmethyl-3-vinylimidazole ionic liquid, the specific process is:

[0050] 1) Weigh 9.411g of 1-vinylimidazole, that is, 0.1mol of 1-vinylimidazole, and add it to 94.11g of ethanol solution to obtain solution 1;

[0051] 2) Add dropwise 13.155 g of triethylamine, i.e. 0.13 mol of triethylamine, to solution 1, and stir to obtain solution 2;

[0052] 3) Dissolve 12.157g of 2-chloroacetamide, that is, 0.13mol of 2-chloroacetamide, in 60.785g of ethanol solution under heating in a water bath at 60°C. The amide solution was added dropwise to solution 2, the microwave heating temperature was 70°C, the microwave radiation power was 300W, the magnetic stirring speed was 400r / min, and the reaction time was 3h to obtain solution 3;

[0053] 4) Distill the solution 3 under reduced pressure to remove the solvent in the reaction, then extract it three times with anhydrous ether, put the product in a vacuum drying oven, and dry it for 24 h...

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Abstract

The invention discloses chloridized 1-arginyl methyl-3-vinyl imidazole ionic liquid and a preparation method thereof. The ionic liquid is an efficient non-pollution green solvent, a nucleophilic substitution reaction is performed on 2-chloroacetamide and 1-vinyl imidazole, chloride ions are selected as an electron donor center of ionic liquid and form a hydrogen bond with hydrogen atoms on hydroxyin cellulose, intramolecular and intermolecular hydrogen bonds of cellulose are broken, and therefore positive ions enter the interior and react with the cellulose. The technology is simple, and theliquid is easy to obtain and can be produced in large batches.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and relates to a chlorinated 1-aminoacylmethyl-3-vinylimidazole ionic liquid and a preparation method thereof. Background technique [0002] Cellulose is the natural polymer compound with the largest reserves in nature. Cellulose has the characteristics of renewable, biodegradable, good biocompatibility, easy to modify, and non-polluting. It is considered to be a renewable new energy source with important application prospects. one. Cellulose is a linear molecule composed of many glucose units. It is because of this special complex structure that cellulose is difficult to dissolve and process in general solvents. Therefore, the first problem encountered in processing cellulose to become the desired product is the design A novel solvent to dissolve cellulose. Most of the traditional cellulose solvents have the disadvantages of being toxic, volatile and difficult to recycle. Therefore, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D233/58C08J3/09C08L1/02
CPCC07D233/58C08J3/096C08J2301/02
Inventor 来水利王花李晨辉葛茹月刘筱
Owner SHAANXI UNIV OF SCI & TECH
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