Oxazolidines ionic liquid containing carbonic ester perssad and preparation method and application thereof

A carbonate-based, ionic liquid technology, used in organic chemistry, capacitors, circuits, etc., can solve problems such as slow research progress, and achieve the effects of simple preparation process, improved performance, good dissolution and dissociation

Inactive Publication Date: 2013-06-05
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As early as 1914, the first ionic liquid, Nitroethylamine, was discovered; however, research in this field progressed slowly

Method used

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  • Oxazolidines ionic liquid containing carbonic ester perssad and preparation method and application thereof
  • Oxazolidines ionic liquid containing carbonic ester perssad and preparation method and application thereof
  • Oxazolidines ionic liquid containing carbonic ester perssad and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0020] The preparation method of the above-mentioned oxazolidine ionic liquid containing carbonate group, such as figure 1 shown, including the following steps:

[0021] S1, carry out synthetic reaction with the N-methyl oxazolidine that molar ratio is 1: 1.1~1.2 and RX (being halogenated carbonic acid ester), the obtained structural formula after reaction finishes is N-methylazolidine halides containing carbonate groups (or called N-methylazolidine halides containing carbonate groups); wherein, R is 0≤n≤4; X is a halogen element, selected from Cl or Br; the reaction formula is as follows:

[0022]

[0023] Among them, RX is Selected from chloroethylene carbonate, chloropropylene carbonate, chlorobutylene carbonate, chloropentenyl carbonate, chlorohexenyl carbonate, bromoethylene carbonate, bromopropylene carbonate, bromocarbonic acid Butenyl ester, bromopentenyl carbonate or bromohexenyl carbonate, etc.; when n is 0, it is chloroethylene carbonate; when n is 4, it is...

Embodiment 1

[0035] Example 1 Synthesis of N-propylene carbonate-N-methylazolidine tetrafluoroborate

[0036] 1. In a 250mL flask, add (87g, 1mol) N-methylazolidine and (149.6g, 1.1mol) chloropropylene carbonate respectively; 2 Under the protection of the atmosphere, the temperature was raised to 60°C, and the synthesis reaction was stirred for 72h; then it was left to cool, and the resultant was washed with ethyl acetate three times, and vacuum-dried at 80°C to obtain light yellow N-propylene carbonate-N- Methylazolidine chloride salt, the yield is 75%;

[0037] 2. The N-propylene carbonate-N-methylazolidine chloride salt (111.5g, 0.5mol) prepared above, NaBF 4 (or KBF 4 ) (55g, 0.5mol) and 100mL of deionized water were added to a 500mL flask, and the reaction was stirred at room temperature for 10h; after the reaction was completed, a mixed solution was obtained; then, the mixed solution was extracted 3 times with 250mL of dichloromethane, and the extracts were combined; Then back-ext...

Embodiment 2

[0040] Example 2 Synthesis of N-vinyl carbonate base-N-methylazolidine hexafluorophosphate

[0041] 1. In a 250mL flask, add (87g, 1mol) N-methylazolidine and (182.6g, 1.1mol) bromoethylene carbonate respectively; 2 Under the protection of the atmosphere, the temperature was raised to 80°C, and the synthesis reaction was stirred for 48h; then it was left to cool, washed with ethyl acetate three times, and dried in vacuum at 80°C to obtain light yellow N-vinyl carbonate-N-methyl Azolidinium bromide, the yield is 74%;

[0042] 2. The N-vinyl carbonate base-N-methylazolidine bromide (126.5g, 0.5mol) and KPF 6 (92g, 0.5mol) and 150mL of deionized water were added to a 500mL flask, and the ion exchange reaction was stirred at room temperature for 24h; after the reaction was completed, the mixed solution of or; then, the mixed solution was extracted 3 times with 250mL of dichloromethane, and the extracts were combined ; Then back-extract with 60mL deionized water each time until s...

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Abstract

The invention belongs to the ionic liquid field and discloses an oxazolidines ionic liquid containing carbonic ester perssad and a preparation method and application thereof. The ionic liquid has the following structural formula. In the formula, R is 0<=n<=4, and Y- is selected from BF4- or PF6- or (CF3SO2)2N- or CF3SO3-. According to the oxazolidines ionic liquid containing the carbonic ester perssad, the performance of the ionic liquid can be improved through the fact that the carbonic ester perssad is brought into intopositive ions. On the one hand, in an electrolyte solution containing lithium salt, the carbonic ester structure has a good dissolving and dissociation function on the lithium salt; and on the other hand, the ionic liquid containing the carbonic ester structure can generate SEI films well, so that the electrochemical stability of the ionic liquid electrolyte solution can be improved.

Description

technical field [0001] The invention relates to the field of ionic liquids, in particular to a carbonate group-containing oxazolidine ionic liquid and a preparation method and application thereof. Background technique [0002] Ionic liquids (Ionic liquids) are liquids at room temperature (generally below 100°C) and are composed of organic cations and inorganic anions (or organic anions). Ionic liquids are adjustable, and changing their anion and cation structures according to different needs can achieve the designer's purpose, so ionic liquids are called the designer's solvent. As early as 1914, the first ionic liquid, nitroethylamine, was discovered; but thereafter, research in this field progressed slowly. Until 1992, the research group led by Wikes synthesized 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid ([EMIM]BF 4 ), the research on ionic liquids developed rapidly, and a series of ionic liquid systems were subsequently developed. Initially, ionic liquid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D413/06H01G9/035H01M10/0569
CPCY02E60/12Y02E60/13Y02E60/10
Inventor 周明杰刘大喜王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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