Synthetic process of organic carbonic ester

A synthesis process and technology of carbonate, applied in the direction of organic carbonate preparation, organic chemistry, etc., can solve the problems of complex production process, low production efficiency, high cost and high cost, and achieve the goal of overcoming many processes, improving conversion rate and product yield rate, improve work efficiency

Inactive Publication Date: 2016-05-11
QINGDAO SHOUTAI AGRI SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the current synthesis process method of organic carbonate, the synthesis method is too single, the process flow is not easy to implement, the generated organic carbonate product has low purity, the single-pass conversion rate of reactants is low, the production process is complicated, the production efficiency is low, and the cost is high. , not suitable for mass production

Method used

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Embodiment

[0010] The synthetic technique of the organic carbonate of present embodiment, comprises the following steps:

[0011] (1) The molar ratio of raw materials phenol and dimethyl carbonate is 1:2:1, the catalyst is n-Bu2SnO, and the molar ratio of phenol and n-Bu2SnO is 1:0.01:0.015;

[0012] (2) Put the raw material and the catalyst in a three-necked flask, heat and stir, the reaction temperature is 220°C, and the reaction time is 17h.

[0013] The synthesis process of organic carbonate does not require cumbersome post-reaction treatment, the process is simple and feasible, the process cost is greatly reduced, and it is environmentally friendly and pollution-free, the process flow is easy to implement, and the industrial production of the product is realized.

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Abstract

The invention discloses a synthetic process of organic carbonic ester, which is simple and convenient to operate, high in productivity and free from corrosion. The synthetic process comprises the following steps: phenol and dimethyl carbonate are taken as raw materials; the molar ratio of phenol to dimethyl carbonate is 1:2-5:1; a catalyst adopts n-Bu2SnO; the molar ratio of phenol to n-Bu2SnO is 1:0.01-1:0.015; the raw materials and the catalyst are placed in a three-neck flask for heating and stirring; the reaction temperature is 150-220 DEG C, and the reaction time is 13-17 h.

Description

technical field [0001] The invention belongs to the technical field of chemical synthesis, and in particular relates to a synthesis process of organic carbonate. Background technique [0002] Organic carbonates are a class of chemicals with a wide range of uses, and are widely used in chemical and pharmaceutical fields. Mainly include propylene carbonate, dimethyl carbonate, diethyl carbonate, diphenyl carbonate, etc. These carbonate molecules are widely used in organic synthesis, pharmaceutical synthesis, engineering plastics, and green additives because of their active carbonyl groups , color TV picture tube cleaners and other fields, in recent years, increasingly subject to domestic and foreign research scholars of all ages. In the current synthesis process method of organic carbonate, the synthesis method is too single, the process flow is not easy to implement, the generated organic carbonate product has low purity, the single-pass conversion rate of reactants is low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C69/96C07C68/06
Inventor 张晶
Owner QINGDAO SHOUTAI AGRI SCI & TECH CO LTD
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