Cross-linkable copper (II) monomer containing quaternary ammonium cation and salicylic Schiff base and preparation method of cross-linkable copper (II)

A technology of quaternary ammonium cations and salicylaldehyde, applied in chemical instruments and methods, preparation of organic compounds, preparation of imino compounds, etc., can solve problems such as small amount of emulsion, long separation time, easy precipitation, etc.

Inactive Publication Date: 2015-02-18
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the weak point of 5-alkyl salicyl aldoxime is that when the concentration of 5-alkyl salicyl aldoxime/copper chelate is high, it is easy to precipitate; The separation time is long

Method used

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  • Cross-linkable copper (II) monomer containing quaternary ammonium cation and salicylic Schiff base and preparation method of cross-linkable copper (II)
  • Cross-linkable copper (II) monomer containing quaternary ammonium cation and salicylic Schiff base and preparation method of cross-linkable copper (II)
  • Cross-linkable copper (II) monomer containing quaternary ammonium cation and salicylic Schiff base and preparation method of cross-linkable copper (II)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1 Preparation of crosslinkable copper (II) monomer (IA-1) containing pyridinium ion and salicylaldehyde Schiff base

[0029]Step 1 Preparation of N-(3-formyl-4-hydroxybenzyl)-4-vinylpyridinium chloride

[0030] In a four-necked flask equipped with a stirrer, weigh 34 grams of 5-chloromethyl salicylaldehyde and dissolve it in 80 milliliters of ethyl acetate, and after nitrogen deoxygenation for 30 minutes, weigh 20 grams of 4-vinylpyridine and A small amount of hydroquinone was added to the ethyl acetate solution. Control the temperature between 8-15°C, react under stirring for 4 hours, increase the temperature of the reaction material to 50-55°C, stir and react for another 2 hours, reduce the temperature of the reaction product system to 5-10°C, filter, and filter the cake Use ethyl acetate to wash 3~5 times, after drying, obtain 49.6 grams of white crystalline chloride N-(3-formyl-4-hydroxybenzyl)-4-vinylpyridinium salt, have strong hygroscopicity, The struct...

Embodiment 2

[0041] Example 2 Preparation of 5-(1-vinylimidazole methylene) salicylaldehyde Schiff base copper(II) monomer (IB-1)

[0042]

[0043] According to the method and operating steps of Example 1, the 4-vinylpyridine in Step 1 of Example 1 is replaced with 1-Vinylimidazole, and the copper chloride in Step 3 is replaced with copper sulfate to obtain (IB-1) formula Blue copper(II) sulfate bis[5-(4-vinylpyridinium)salicylaldehyde allylamine] with the structure shown.

Embodiment 3

[0044] Example 3 Preparation of 5-(N, N-dimethyl-N-allyl ammonium methylene) salicylaldehyde Schiff base copper (II) monomer (IC-1)

[0045]

[0046] According to the method and operation steps of Example 1, the 4-vinylpyridine in Step 1 of Example 1 was replaced with N, N-dimethylallylamine, and the copper chloride in Step 3 was replaced with copper sulfate to obtain (IC-1) Blue crystalline sulfate bis[(5-(N,N-dimethyl-N-allyl ammonium methylene) salicylaldehyde allylamine]copper(II) with the structure shown in the formula ).

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Abstract

The invention discloses a cross-linkable copper (II) monomer containing quaternary ammonium cation and salicylic Schiff base and a preparation method of the cross-linkable copper (II). The preparation method is to regard salicylic Schiff base as a functional group of copper (II) coordination imprinted polymer, combine the technique requirements of a copper (II) wet melting technology of 5-alkyl salicylaldoxime chelate extraction, utilize the polymer synthesis design philosophy, design the cross-linkable copper (II) monomer containing quaternary ammonium cation and salicylic Schiff base, conduct a polymerization reaction to prepare the salicylic Schiff base-copper (II) chelate imprinted polymer as a solid phase extraction agent in the copper wet melting industry. The cross-linkable copper (II) monomer containing quaternary ammonium cation and salicylic Schiff base has the characteristics of high copper (II) chelation absorbing selectivity, high copper (II) chelation absorbing capacity, high hydrophilia, high water phase dispersing rate, high separation coefficient, high elution rate, high mechanical stability, high chemical stability and high simplicity in preparation technology.

Description

technical field [0001] The invention relates to a functional monomer, in particular to a crosslinkable copper (II) monomer containing quaternary ammonium cations and salicylaldehyde Schiff bases, which is used to prepare copper ion solid-phase extraction agents or copper ion imprinted polymer materials, belonging to The field of functional materials. technical background [0002] In the field of separation materials and separation engineering, imprinted solid phase extraction agent is the most popular functional polymer material, which has the advantages of high separation selectivity, good separation effect, simple process and less solvent consumption, and has gradually replaced the traditional liquid -Liquid or liquid-solid extraction has become a reliable and effective method for separation, analysis, and enrichment of organic matter or metal ions. The ion imprinted solid phase extraction agent is prepared by the polymerization process of the metal ion as the template mo...

Claims

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Application Information

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IPC IPC(8): C07D213/04C07D233/61C07C251/24C07C249/02
CPCC07C221/00C07C249/02C07C251/24C07D213/04C07D233/61C07C223/02
Inventor 张田林岳夏丹李京昊张可人
Owner HUAIHAI INST OF TECH
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