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Ethylenedimaleamic acid and preparation method thereof

A technology of ethylenedimaleamic acid and maleamic acid, which is applied in the field of ethylenedimaleamic acid and its preparation, can solve the problems of poor water treatment performance, cannot use water treatment materials, etc. The effect of simple handling and simple reaction operation

Inactive Publication Date: 2012-10-31
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The synthesis of imide compounds generally involves the reaction of acid anhydrides and amines to obtain imides substituted with alkyl groups on the nitrogen. However, the imide compounds synthesized in the prior art have poor water treatment performance and cannot be used as water treatment materials. use

Method used

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  • Ethylenedimaleamic acid and preparation method thereof
  • Ethylenedimaleamic acid and preparation method thereof
  • Ethylenedimaleamic acid and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0013] The reaction equation of the preparation method of ethylene bismaleamic acid of the present invention is:

[0014]

Embodiment 1

[0017] Add 2 mol of maleic anhydride and 10 ml of tetrahydrofuran into a dry three-necked flask, add 1 mol of ethylenediamine dropwise under stirring, stir at room temperature for two hours, a white powder is produced, filter with suction, and dry to obtain ethylene bismaleamic acid, weigh Calculated, its productive rate is 83%. Its infrared spectrum is as figure 1 shown.

Embodiment 2

[0019] Add 2.2mol of maleic anhydride and 10ml of tetrahydrofuran into a dry three-necked flask, add dropwise 1mol of ethylenediamine under stirring, stir at room temperature for two hours, a white powder is produced, filter with suction, and dry to obtain ethylenedimaleamic acid, which is called Recalculation, its productive rate is 80%.

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PUM

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Abstract

The invention discloses an ethylenedimaleamic acid and a preparation method thereof. The structural formula of the ethylenedimaleamic acid is disclosed in the specification. The preparation method comprises the following steps: adding A mol of maleic anhydride and B ml of tetrahydrofuran into a dry three-neck flask, dropwisely adding C mol of ethylenediamine while stirring, reacting while stirring at room temperature for two hours to generate white powder, carrying out vacuum filtration, and drying to obtain the ethylenedimaleamic acid, wherein A:B:C=(2-2.8):10:1. The method disclosed by the invention has the advantages of simple and safe reaction operation, simple after-treatment and high yield; and the prepared ethylenedimaleamic acid as a bran-new amide compound can be used as an organic chemical intermediate and a water treatment material.

Description

【Technical field】 [0001] The invention belongs to the field of chemical synthesis, in particular to ethylenebismaleamic acid and a preparation method thereof. 【Background technique】 [0002] Imide compounds are an important class of organic compounds, which have been widely used in biology, synthetic chemistry and polymerization chemistry. Because of their fluorescent activity, imides can be combined with physiologically active thiol cysteine ​​and glutamate. Quantitative reactions such as cystine peptides can generate strong fluorescent substances, which can also be used for disease monitoring and clinical diagnosis and treatment; imide compounds can also be used to synthesize some important biological natural products such as panmycin, porcine bilirubin, etc. ; In polymer chemistry, it can be used as a monomer for synthesizing polyamide polymers, so the research on this kind of compounds is very active at home and abroad, and the research focus is mainly on its synthesis. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C233/38C07C231/02
Inventor 刘玉婷苏宝君尹大伟元方王捷
Owner SHAANXI UNIV OF SCI & TECH
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