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Reagent for lithiation reaction, preparation method and use thereof

A technology of lithiation reaction and reagents, which is applied in the direction of analyzing materials through chemical reactions, can solve the problems of high price, limited lithiation ability, and inapplicability, and achieve the effect of low price, wide application, and easy storage

Inactive Publication Date: 2005-11-02
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects that existing lithiation reagents are not suitable for inorganic reactions, have limited lithiation ability, and are very expensive, so as to provide a kind of lithiation reaction that is suitable for various types of lithiation reactions, and has high reactivity, easy preparation, Easy-to-storage, inexpensive reagents for lithiation reactions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In an inert atmosphere (in an argon-filled glove box with a water content of less than 1%), the measured ratio of dry biphenyl was dissolved in anhydrous ethylene glycol dimethyl ether to obtain 0.5M / l transparent biphenyl solution, put the metal lithium of the metered ratio into the solution at room temperature, the metal lithium dissolves rapidly, the color of the solution gradually becomes dark green, and the concentration of lithium obtained is a solution of 1M / l, and the mixed solution is the present invention. reagents for lithiation reactions.

[0021] Through electron paramagnetic resonance and nuclear magnetic resonance, it can be known that the state of lithium in the reagent for lithiation reaction is close to that of metal lithium, and it is stored in an inert atmosphere and used under an inert atmosphere as a reagent for lithiation reaction. .

[0022] In order to study the effect of the lithiation reaction of the reagent used in the lithiation reaction, t...

Embodiment 2

[0024] In an inert atmosphere (the content of water is less than 1%), the dry terphenyl of the metered ratio is dissolved in anhydrous ethylene glycol diethyl ether to obtain a transparent solution of terphenyl of 0.1M / l, and the metal lithium of the metered ratio is at room temperature Put it into the solution, lithium metal dissolves rapidly, the color of the solution gradually becomes dark green, and the concentration of lithium obtained is 0.1M / l solution, and the mixed solution is the reagent for lithiation reaction of the present invention.

[0025] Through electron paramagnetic resonance and nuclear magnetic resonance, it can be known that the state of lithium in the reagent for lithiation reaction is close to that of metal lithium, and it is stored in an inert atmosphere and used under an inert atmosphere as a reagent for lithiation reaction. .

[0026] In order to study the effect of the lithiation reaction of this reagent, the Cr 3 o 8 Put into this reagent, Cr 3 o ...

Embodiment 3

[0028] In an inert atmosphere (the content of water is less than 1%), the dry quaterphenyl of the stoichiometric ratio is dissolved in anhydrous ethylene glycol dibutyl ether to obtain a transparent solution of 0.5M / l quaterphenyl, and the metal of the stoichiometric ratio is Lithium is put into this solution at room temperature, metallic lithium dissolves rapidly, and the color of solution becomes dark green gradually, and the concentration that obtains lithium is the solution of 1M / l, and this mixed solution is the lithiation reaction of the present invention. reagent.

[0029] Through electron paramagnetic resonance and nuclear magnetic resonance, it can be known that the state of lithium in the reagent for lithiation reaction is close to that of metal lithium, and it is stored in an inert atmosphere and used under an inert atmosphere as a reagent for lithiation reaction. .

[0030] In order to study the effect of the lithiation reaction of this reagent, the Cr 3 o 8 Put...

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PUM

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Abstract

The present invention relates to reagent for lithiation reaction. On the condition of room temperature and inert atmosphere, mix lithium, organic compound contained benzene ring and ethers compound, solve and obtain solution; wherein, lithium 0.01~10M / L, organic compound contained benzene ring 0.01~5M / L, other is solvent; the general form is R1OR2 or ethers compound with R1OR2OR3; wherein, R1, R2, R3 are alkyl of C1í½C5; organic compound contained benzene ring aforementioned comprises biphenyl or condensed-nuclei aromatics, optimization of biphenyl and its derivant, terphenyl, quaohenyl, naphthalin, anthracene, and phenanthrene. The lithiation reagent is easy for preparation, storage, cheap of cost and high activity; not only for common reaction, but also can be used to preprocess of electrode material to store lithium cell or prepare new inorganic compound contained lithium; has wide scope of usage.

Description

technical field [0001] The invention relates to a reagent for lithiation reaction, in particular to a reagent for lithiation reaction capable of lithiation of inorganic reactants, a preparation method and application thereof. Background technique [0002] In chemical reactions, lithiation reactions refer to a class of reactions that introduce lithium into reactants. The widely used reagents involved in the lithiation reaction are generally butyllithium in cyclohexane, or LiI in anhydrous acetonitrile. In this solution, the chemical state of lithium is ion state, and the activity of this reaction is related to whether it can generate stable butyl compound or whether it can oxidize I ion. Lithiation reagents can be widely used in the addition reaction of unsaturated bonds, including the addition reaction of C-C double bonds, the addition reaction with aldehydes and ketones, the preparation of active intermediates, the reaction with metal halides, and the polymerization of ole...

Claims

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Application Information

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IPC IPC(8): G01N21/75
Inventor 李泓柳娜陈立泉黄学杰
Owner INST OF PHYSICS - CHINESE ACAD OF SCI
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