Carbonyl conjugated heterocyclic compound and preparation and application

A technology for conjugated heterocycles and compounds is applied in the fields of carbonyl-conjugated heterocycles and their preparation and application, can solve problems such as high energy consumption for a long time, and achieves a simple and feasible synthesis method, high yield, and avoids processing steps Effect

Active Publication Date: 2017-03-22
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a big challenge for these organic compounds is that most of the synthesis process involves multi-step reactions or needs to be carried out under high temperature conditions, and the reaction takes a long time and consumes a lot of energy.

Method used

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  • Carbonyl conjugated heterocyclic compound and preparation and application
  • Carbonyl conjugated heterocyclic compound and preparation and application
  • Carbonyl conjugated heterocyclic compound and preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Dissolve 2g of 1,4,5,8-naphthalenetetracarboxylic anhydride (NTCDA, 7.6mmol) in 40.0mL dimethylformamide (DMF) and magnetically stir at 130°C;

[0029] (2) Then 2.1mL of aniline (PA, 23.0mmol) and 4.3mL of triethylamine (30.0mmol) were dropped into the solution of step (1) dropwise, followed by heating to reflux under magnetic stirring for 1 hour and brown Precipitation;

[0030] (3) The mixed solution obtained in step (2) is removed by centrifugation and filtration to obtain a brown precipitate;

[0031] (4) Dispersing the obtained brown precipitate in ethanol, and thoroughly washing the soluble impurities with ethanol and then filtering to obtain the crude product;

[0032] (5) The product obtained in step (4) is then dissolved in dimethylformamide (DMF) and recrystallized to obtain an orange needle-shaped recrystallized product;

[0033] (6) washing and filtering the recrystallized product obtained in step (5) with ethanol once;

[0034] (7) The product obtain...

Embodiment 2

[0044] (1) Dissolve 2g of 1,4,5,8-naphthalenetetracarboxylic anhydride (NTCDA, 7.6mmol) in 40.0mL acetone and magnetically stir at 50°C;

[0045] (2) Then 2.1mL of aniline (PA, 23.0mmol) and 4.3mL of triethylamine (30.0mmol) were dropped into the solution of step (1) dropwise, and then heated under magnetic stirring to reflux for 0.5 hours and then brown Precipitation;

[0046] (3) The mixed solution obtained in step (2) is removed by centrifugation and filtration to obtain a brown precipitate;

[0047] (4) Dispersing the obtained brown precipitate in ethanol, and thoroughly washing the soluble impurities with ethanol and then filtering to obtain the crude product;

[0048] (5) The product obtained in step (4) is then dissolved in dimethylformamide (DMF) and recrystallized to obtain an orange needle-shaped recrystallized product;

[0049] (6) washing and filtering the recrystallized product obtained in step (5) with deionized water once;

[0050] (7) The product obtained in...

Embodiment 3

[0054] (1) Dissolve 2g of 1,4,5,8-naphthalenetetracarboxylic anhydride (NTCDA, 7.6mmol) in 40.0mL of methanol and magnetically stir at 60°C;

[0055] (2) Then 2.1mL of aniline (PA, 23.0mmol) and 4.3mL of triethylamine (30.0mmol) were dropped into the solution of step (1) dropwise, followed by heating to reflux under magnetic stirring for 2 hours and brown Precipitation;

[0056] (3) The mixed solution obtained in step (2) is removed by centrifugation and filtration to obtain a brown precipitate;

[0057] (4) Dispersing the obtained brown precipitate in ethanol, and thoroughly washing the soluble impurities with ethanol and then filtering to obtain the crude product;

[0058] (5) The product obtained in step (4) is then dissolved in dimethylformamide (DMF) and recrystallized to obtain an orange needle-shaped recrystallized product;

[0059] (6) washing and filtering the recrystallized product obtained in step (5) with ethanol once;

[0060] (7) The product obtained in step (...

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Abstract

The invention belongs to the field of lithium ion battery materials, and discloses a carbonyl conjugated heterocyclic compound and preparation and application. The carbonyl conjugated heterocyclic compound is N,N'-diphenyl-1,4,5,8-naphthalimide, and has a structural formula shown as a formula (I). A preparation method comprises the following steps: dissolving 1,4,5,8-naphthalenetetracarboxylic dianhydride in a solvent, stirring to mix uniformly, dropwise adding phenylamine and trithylamine, stirring and performing a refluxing reaction until brown precipitate is generated; separating and washing the precipitate, recrystallizing, washing and drying in vacuum to obtain a product. In the preparation method, a product is prepared through a one-pot reaction, and a synthetic method is simple and feasible, is low in cost, has high yield, saves energy and is environment-friendly. The prepared N,N'-diphenyl-1,4,5,8-naphthalimide has high discharging capacity, high cycling stability and high rate performance after thermal treatment, and is a promising positive electrode material for a lithium ion battery. The formula (I) is shown in the description.

Description

technical field [0001] The invention belongs to the field of lithium ion battery materials, and in particular relates to a carbonyl conjugated heterocyclic compound and its preparation and application. Background technique [0002] Lithium-ion batteries have been widely used in various portable electronic devices at this stage, and are gradually developing into larger-scale energy storage fields such as electric vehicles and smart grids. At present, non-renewable inorganic materials are mainly used as the core components of lithium-ion batteries --- positive and negative electrode materials. Higher, better flexibility, sustainability, environmental friendliness, and flexible molecular design are gradually being recognized as renewable and sustainable electrode materials for lithium-ion batteries. Among them, organic carbonyl compounds, as high-energy cathode materials for lithium-ion batteries, have been widely studied due to their redox stability, structural diversity and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D471/06H01M4/60H01M10/0525
CPCC07D471/06H01M4/60H01M10/0525Y02E60/10
Inventor 曾荣华舒东南俊民
Owner SOUTH CHINA NORMAL UNIVERSITY
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