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Method for synthesizing succinonitrile or adiponitrile

A synthesis method and technology for succinonitrile are applied in the field of synthesis of succinonitrile or adiponitrile, and achieve the effects of low human and environmental harm, high yield, and suitability for industrialized mass production

Pending Publication Date: 2020-06-12
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Method for synthesizing succinonitrile or adiponitrile
  • Method for synthesizing succinonitrile or adiponitrile
  • Method for synthesizing succinonitrile or adiponitrile

Examples

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Embodiment 1

[0047] Add 102g of acetonitrile, 10g of ferrous sulfate, and 42g of hydrogen peroxide (about 30g of water) into the flask equipped with mechanical stirring, then start stirring and raise the temperature to 30°C, feed nitrogen, the reaction pressure is 1atm (one atmospheric pressure), and keep warm for 5h After the reaction is completed and the solid is recovered, the liquid is distilled under reduced pressure to obtain the finished product of succinonitrile, the product purity is 95%, and the yield is 15%.

Embodiment 2

[0049]Add 102g of acetonitrile, 10g of ferrous sulfate, and 42g of hydrogen peroxide (about 30g of water) into the flask containing the magneton, feed high-pressure nitrogen to pressurize to 2atm (2 atmospheres), add magnetic stirring, and then heat up to 35°C and keep warm 6h, after the reaction was completed and the solid was recovered, the liquid was distilled under reduced pressure to obtain the finished product of succinonitrile with a purity of 97% and a yield of 18%.

Embodiment 3

[0051] Add 500g of acetonitrile, 60g of oxyferric chloride, and 105g of hydrogen peroxide (with a water content of about 75g) into a flask equipped with mechanical stirring, then start stirring and heat up to 50°C, and nitrogen gas is introduced, and the reaction pressure is 1atm (one atmosphere) , keep warm for 8h, after the reaction is completed, recover the solid, and distill under reduced pressure to obtain the finished product of succinonitrile, the product purity is 94%, and the yield is 12%.

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Abstract

The invention relates to the field of organic synthesis, discloses a method for synthesizing succinonitrile or adiponitrile, and particularly relates to a method for respectively preparing the succinonitrile or the adiponitrile by contacting a reactant acetonitrile or propionitrile in a reactor in the presence of a Fenton reagent. According to the method, a traditional technical route for synthesizing the succinonitrile or the adiponitrile is avoided, the succinonitrile or the adiponitrile is synthesized in one step by taking the acetonitrile or the propionitrile as a reactant, and the methodis a brand-new, green and safe new synthesis process with extremely low harm to a human body and the environment.

Description

technical field [0001] The invention relates to the field of organic synthesis, in particular to a method for synthesizing succinonitrile or adiponitrile. Background technique [0002] Succinonitrile, molecular formula NCCH 2 CH 2 CN is a colorless and odorless waxy substance with a melting point of 58.1°C, soluble in acetone, chloroform, dioxane, slightly soluble in water, ethanol, ether, carbon disulfide and benzene. Succinonitrile is mainly used as the raw material of quinacridone pigments, which are widely used in automotive and galvanized iron sheet coatings, color printing pigments and colorants for plastic products; it is also used in the production of nylon and pharmaceutical intermediates; it can also be used as reagent. Succinonitrile has the advantages of anti-bloating, improving the electrochemical stability window, and improving the high-temperature cycle performance of batteries, and has gradually become an important raw material for lithium-ion battery elec...

Claims

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Application Information

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IPC IPC(8): C07C253/30C07C255/04
CPCC07C253/30C07C255/04
Inventor 李仁宏闫晓庆卢楠
Owner ZHEJIANG SCI-TECH UNIV
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