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Preparation of ion liquid having B acid center and L acid center

A technology of ionic liquid and B acid, applied in the field of preparation of ionic liquid, can solve the problem of single type of acid, and achieve the effect of high thermal stability, high catalytic activity and good catalytic effect.

Inactive Publication Date: 2009-01-21
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this ionic liquid has problems such as a single type of acid

Method used

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  • Preparation of ion liquid having B acid center and L acid center
  • Preparation of ion liquid having B acid center and L acid center
  • Preparation of ion liquid having B acid center and L acid center

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of Sulfonic Acid Functionalized Triethylamine Chloroaluminate Ionic Liquid

[0024] Preparation of step 1 ylide

[0025] Weigh the raw materials with the same amount of triethylamine and 1,4-butane sultone, stir at room temperature for 72 hours to obtain a white solid salt, then filter it with suction, and wash it three times with 99% diethyl ether, the 60 ℃ for vacuum drying, that is, the ylide.

[0026] Step 2 Hydrohalic acid acidification

[0027] Stoichiometric ylide and hydrochloric acid were weighed, the amount of hydrochloric acid was equal to the amount of sulfonate in the ylide, heated and stirred at 80° C. for 4 h, and the corresponding anion was an ionic liquid of chloride ion.

[0028] Step 3 Synthesis of Ionic Liquids

[0029] Take the above-mentioned ionic liquid and anhydrous aluminum trichloride in equal quantities, heat and stir under vacuum at 80° C. for 12 hours, and obtain the following ionic liquid having both B acid centers and L aci...

Embodiment 24

[0032] Except for the following differences, the rest are the same as in Example 1, and the metal halides in Table 1 are selected for use.

[0033] Table 1

[0034]

Embodiment 5-10

[0036] Except for the following differences, the rest are the same as in Example 1, and the tertiary amine compounds in Table 2 are selected.

[0037] Table 2

[0038]

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Abstract

The invention discloses a preparation method for an ionic liquid with both B acid sites and L acid sites. The preparation method comprises the following steps that tertiary amine compounds are reacted with sultones so as to obtain a polysulfonate ylide; then, halogen acid is adopted to carry out acidification so as to obtain a sulfo-group functionalized ionic liquid with haloid anion; and the ionic liquid is reacted with metal halides so as to prepare the ionic liquid with both B acid sites and L acid sites. Moreover, the ionic liquid has the characteristics of high thermal stability, a variety of acids, low synthesis cost, excellent catalytic effect, and the like.

Description

technical field [0001] The invention relates to the technical field of organic chemical synthesis, in particular to a method for preparing an ionic liquid with both B-acid centers and L-acid centers. Background technique [0002] In today's crisis of energy problems and environmental problems, it has become the goal of modern chemical industry to efficiently generate target products with a small amount of energy without producing unnecessary by-products. Acid catalysts are indispensable in the modern chemical industry and are widely used in the manufacture of various products such as pharmaceuticals, petrochemical products, and polymer products. However, most of the currently used liquid acid catalysts are hydrochloric acid and sulfuric acid. . The liquid catalyst used in the production process needs to be neutralized by alkali, and separated and recovered from the product by removing the salt generated by neutralization. However, a considerable amount of energy is consume...

Claims

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Application Information

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IPC IPC(8): C07C309/14C07D233/60C07D213/34C07D295/088B01J31/02
Inventor 杨建国梁学正龚国珍权南南吴海虹何鸣元
Owner EAST CHINA NORMAL UNIV
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