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Saccharin anion ion liquid and its preparing method

A technology of saccharin anion and ionic liquid, which is applied in the field of new chemical materials and its preparation, and achieves the effects of low price, simple equipment and low preparation cost

Inactive Publication Date: 2007-06-20
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the ionic liquid of the saccharin anion involved in the present invention has not been reported so far, and the preparation method of the ionic liquid of this type of saccharin anion is also mentioned for the first time in the present invention

Method used

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  • Saccharin anion ion liquid and its preparing method
  • Saccharin anion ion liquid and its preparing method
  • Saccharin anion ion liquid and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031]Embodiment 1: Tetramethylammonium saccharin salt ionic liquid

[0032] Mix 2.19g (0.020mol) of tetramethylammonium chloride and 5.79g (0.024mol) of sodium saccharin in 50mL of acetonitrile solution, mix the two solutions thoroughly and stir for 24 hours, then filter. The filtrate was evaporated to dryness by rotary evaporation at 60° C. to obtain a yellow transparent liquid, namely tetramethylammonium saccharin salt ionic liquid. The reaction temperature is room temperature 24°C, and the yield: 88%. The reaction formula is:

[0033]

Embodiment 2

[0034] Embodiment 2: Tetraethylammonium saccharin salt ionic liquid

[0035] Mix 3.31g (0.020mol) of tetraethylammonium chloride and 5.79g (0.024mol) of sodium saccharin in 50mL of acetonitrile solution, mix and stir the two solutions for 24 hours, and filter. The filtrate was evaporated to dryness by rotary evaporation at 60° C. to obtain a yellow transparent liquid, namely tetraethylammonium saccharin salt ionic liquid. The reaction temperature is room temperature 24°C, and the yield: 86%. The reaction formula is:

[0036]

Embodiment 3

[0037] Embodiment 3: Tetrabutylammonium saccharin salt ionic liquid

[0038] Mix 5.56g (0.020mol) of tetrabutylammonium chloride and 5.79g (0.024mol) of sodium saccharin in 50mL of acetonitrile solution, mix the two solutions fully and stir for 24 hours, then filter. The filtrate was evaporated to dryness by rotary evaporation at 60°C to obtain a light yellow transparent liquid, which was tetrabutylammonium saccharin ionic liquid. The reaction temperature is room temperature 24°C, and the yield: 85%. The reaction formula is:

[0039]

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PUM

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Abstract

This invention provides a new saccharin-anion solution and its preparation method. In this ion solution, the cation part is quaternary ammonium cation or amino acid ester cation; the anion part is saccharin-anion and. The preparation method is as follow. First, enable quaternary ammonium cation halogenide or amino acid ester salt and sodium saccharin to react in organic solvent; then, filter the solution after reaction, evaporate the filtrate to remove the solvent to acquire the saccharin-anion solution. Advantages: the invented ion solution not only has the ion solution characteristic but also has the characteristic of chiral substance and the acidity of Bmsted acid. Besides, it is harmless to the environment, low in cost, simple in production and high in purity.

Description

technical field [0001] The invention relates to a class of ionic liquids and a preparation method thereof, in particular to a new class of saccharin anion ionic liquids and a preparation method of the ionic liquid, belonging to the technical field of new chemical materials and their preparation. Background technique [0002] Ionic liquid is a low-temperature molten salt. It is a low-viscosity liquid composed entirely of ions at close to room temperature (<150°C). Ionic liquids are generally composed of organic cations and inorganic or organic anions. Ionic liquid is an excellent electrolyte. By the mid-1980s, it was found that ionic liquid can also be used as a new type of solvent and a new catalytic material, with properties that cannot be compared with common organic solvents and traditional catalysts. In the field of catalytic research, ionic liquids replace traditional catalysts and organic solvents, and improve many well-known chemical reaction processes, such as Die...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07D275/06
Inventor 寇元陶国宏何玲刘伟山
Owner PEKING UNIV