Synthesis method of 1,2-di(2-(4-dimethoxyphenoxy) ethoxy) ethane

Abstract

The invention discloses a synthesis method of 1,2-di(2-(4-methoxyphenoxy) ethoxy) ethane, and aims to solve the problems of long reaction time, complex post-treatment and the like in the prior art. According to the method provided by the invention, 4-methoxyphenol and 1,2-(dichloroethane group) ethane are taken as raw materials, and the method comprises the following steps: (1) carrying out stirring at 20 DEG C, adding 4-methoxyphenol and 1,2-(dichloroethane group) ethane into N,N-dimethylformamide, adding potassium hydroxide to react at 150 DEG C for 12h, and pouring a reaction solution intowater to obtain a brown turbid solution 1; (2) cooling the brown solution 1 to -15 DEG C, keeping the temperature for 4h, filtering the brown solution to obtain a white flaky solid, adding diethyl ether into the white flaky solid, raising the temperature to 35 DEG C, filtering the mixture when the mixture is hot, cooling the mixture to -15 DEG C, keeping the temperature for 4h, and carrying out filtering to obtain white powdery solid 1,2-di(2-(4-dimethoxyphenoxy) ethoxy) ethane. The method provided by the invention is mainly used for synthesizing 1,2-di(2-(4-dimethoxyphenoxy) ethoxy) ethane.

Description

Technical field

[0001] The invention relates to a synthesis method of 1,2-bis(2-(4-dimethoxyphenoxy)ethoxy)ethane. It is organic synthesis. Background technique

[0002] The ability of a solid propellant to keep its chemical properties within the allowable range during storage is called chemical stability. Commonly used nitrocellulose, nitroglycerin and other nitrate ester-containing compounds are the main energy components in double-base and modified double-base propellants. The nitrate ester bond is easy to break (bond energy 150.5-167.2kJ / mol), which generates heat Decomposition releases a large amount of gas and heat, and the released nitrogen oxides accelerate the decomposition of nitrate esters to form an autocatalytic reaction, which leads to the decline of the mechanical properties and combustion performance of the propellant, and even combustion, explosion and other vicious accidents. Therefore, the propellant containing nitrate ester-based components will also decompo...

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