L-sulforamidate type chiral ionic liquid and its prepn

A chiral ionic liquid, sulfate type technology, applied in the preparation of cyanide reaction, chemical instruments and methods, preparation of organic compounds, etc., can solve the problems of difficult preparation, high cost, pollution, etc., and achieve low preparation cost and high price. Inexpensive, simple to prepare effects

Inactive Publication Date: 2002-12-11
EAST CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are also some shortcomings in the preparation of ionic liquids in the past: lack of raw materials, high cost, generally more than twice that of commonly used organic solvents; difficult preparation, difficult produ

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: Alanine sulfate chiral ionic liquid

[0021] Weigh 5.00g alanine (0.056mol, more than 99% purity, purchased by Shanghai Jier Biochemical Company) and put it into 50ml distilled H 2 In a beaker of O, add 98% H dropwise while stirring 2 SO 4 (analytical pure), H 2 SO 4 The amount used is 2.81g (0.028mol), that is, the molar ratio of the reaction raw materials is 2:1, and the transparent mixed solution is continued to be stirred at room temperature for 1 hour, then transferred to a rotary evaporator, evaporated to remove water at 40°C-50°C, and then The temperature was raised to 80°C-85°C for evaporation for 2 hours, and finally a colorless and transparent chiral ionic liquid of alanine sulfate was obtained. The reaction formula is:

[0022]

Embodiment 2

[0023] Embodiment 2: Valine sulfate chiral ionic liquid

[0024] Take by weighing 5.00g valine (0.043mol, more than 99% of purity, purchased by Shanghai Jier Biochemical Company) and put it into a container containing 50ml of distilled H 2 In a beaker of O, add 98% H dropwise while stirring 2 SO 4 (analytical pure), H 2 SO 4 The dosage is 2.1 g (0.021 mol), that is, the molar ratio of the reaction raw materials is 2:1. Continue to stir the transparent mixture at room temperature for 1 hour, transfer it to a rotary evaporator, evaporate water at 40°C-50°C, then heat up to 80°C-85°C for 2 hours, and finally obtain a colorless transparent valine Sulfate chiral ionic liquid. The reaction formula is:

[0025]

Embodiment 3

[0026] Embodiment 3: leucine sulfate chiral ionic liquid

[0027] Weigh 5.00g leucine (0.038mol, more than 99% purity, purchased by Shanghai Jier Biochemical Company) and put it into a 50ml distilled H2 In a beaker of O, add 98% H dropwise while stirring 2 SO 4 (analytical pure), H 2 SO 4 The dosage is 1.9 g (0.019 mol), that is, the molar ratio of the reaction raw materials is 2:1. Continue to stir the transparent mixture at room temperature for 1 hour, transfer it to a rotary evaporator, evaporate water at 40°C-50°C, then heat up to 80°C-85°C for 2 hours, and finally obtain a colorless transparent leucine Sulfate chiral ionic liquid. The reaction formula is:

[0028]

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PUM

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Abstract

The present invention relates to a new type chemical material and its preparation. L-sulforamidate-type chiral ionic liquid is prepared through the full reaction of aqueous L-amino acid solution with98% sulfuric acid. The produced L-sulforamidate-type chiral ionic liquid has the features of both ionic liquid and chiral matter. The reaction has high product purity, low cost, no exhausted pollutant and no side product, and is suitable for application in large scale industrial production. The new material is capable of becoming environmentally friendly important chemical material.

Description

(1) Technical field [0001] The invention relates to an ionic liquid and a preparation method thereof, in particular to a novel L-amino acid sulfate type chiral ionic liquid and a preparation method of the chiral ionic liquid, belonging to the technical field of new chemical materials and its preparation. (2) Background technology [0002] In recent years, ionic liquids have attracted widespread attention as green solvents or catalysts. They are commonly used in some chemical reactions such as organic synthesis, chemical separation, and electrochemistry, and have dual-functional characteristics of solvents and catalysts. Li Ruxiong et al. mentioned in "Chemical Reagents", 2001, 23 (4), pages 211-215, "Synthesis and Application of Ionic Liquids", that there are currently 4 types of cations in ionic liquids: alkyl quaternary ammonium ions, Alkyl quaternary phosphine ions, alkyl imidazolium ions, alkyl pyridinium ions; anions mainly include Cl - 、Br - , BF ...

Claims

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Application Information

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IPC IPC(8): B01J31/04C07C227/16
Inventor 单永奎戴立益叶生荣何鸣元
Owner EAST CHINA NORMAL UNIVERSITY
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