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Method for synthesizing cyclic carbonate by catalysis of amino functional ionic liquid

A technology of amino-functionalization and cyclic carbonate, applied in the direction of organic chemistry, can solve the problems of harsh reaction conditions, low catalyst activity, and difficulty in carbon dioxide activation, and achieve high reactivity, good industrial application prospects, and mild reaction conditions Effect

Inactive Publication Date: 2014-03-26
HEILONGJIANG UNIV
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  • Application Information

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Problems solved by technology

[0004] The purpose of the invention is to solve the existing problem of utilizing CO 2 The method for synthesizing cyclic carbonates with epoxides has the problems of difficult activation of carbon dioxide, low catalyst activity, use of toxic organic solvents, and harsh reaction conditions, and a method for catalytically synthesizing cyclic carbonates with amino-functionalized ionic liquids is provided

Method used

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  • Method for synthesizing cyclic carbonate by catalysis of amino functional ionic liquid
  • Method for synthesizing cyclic carbonate by catalysis of amino functional ionic liquid
  • Method for synthesizing cyclic carbonate by catalysis of amino functional ionic liquid

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specific Embodiment approach 1

[0018] Specific embodiment 1: This embodiment is a method for catalytically synthesizing a cyclic carbonate with an amino-functionalized ionic liquid, which is specifically completed according to the following steps:

[0019] Add amino-functionalized ionic liquid to the autoclave, then add epoxy compound, the molar ratio of described amino-functionalized ionic liquid and epoxy compound is (1~50):1000, airtight autoclave, under normal pressure and temperature A constant temperature reaction in an oil bath at 25-200°C for 0.5h-24.0h, and then cooling to room temperature in an ice-water mixture to obtain a reaction product, which is distilled under reduced pressure using a rotary evaporator to obtain a cyclic carbonate.

[0020] The chemical formula of the amino functionalized ionic liquid described in this embodiment is as stated in Wherein X is Cl, Br or I, n=1, 2, 3 or 4; the described Wherein X is Cl, Br or I, n=1, 2, 3 or 4; the described In which X is Cl, Br or I, ...

specific Embodiment approach 2

[0026] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the molar ratio of the amino functionalized ionic liquid to the epoxy compound is (5-50):1000. Others are the same as the first embodiment.

specific Embodiment approach 3

[0027] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the molar ratio of the amino-functionalized ionic liquid to the epoxy compound is 10:1000. Others are the same as those in Embodiment 1 or 2.

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Abstract

A method for synthesizing cyclic carbonate by the catalysis of amino functional ionic liquid relates to a method for synthesizing the cyclic carbonate, in particular to a method for synthesizing the cyclic carbonate through a cycloaddition reaction between carbon dioxide and an epoxy compound. The invention aims at solving the problems of difficult carbon dioxide activation, low catalyst activity, use of a toxic organic solvent and strict reaction conditions of the existing method for synthesizing the cyclic carbonate through the utilization of the CO2 and the epoxy compound. The method comprises the following steps: using the amino functional ionic liquid as a catalyst, subjecting the epoxy compound and the CO2 to the reaction at a certain temperature and under certain pressure, utilizing a rotating evaporimeter to carry out pressure reduction and distillation on a reaction product, and obtaining the cyclic carbonate. The cyclic carbonate is mainly synthesized through the catalysis of the amino functional ionic liquid.

Description

technical field [0001] The invention relates to a method for synthesizing cyclic carbonate; in particular, it relates to a method for synthesizing cyclic carbonate by carbon dioxide and epoxy compound through cycloaddition reaction. Background technique [0002] CO 2 Since the 1980s, chemistry has attracted widespread attention from all over the world, especially industrially developed countries. According to statistics, the CO emitted into the atmosphere from the combustion of various fossil fuels (coal, oil, natural gas) around the world 2 The amount reaches 18.5-24.2 billion tons / year, but its utilization is still less than 100 million tons / year. while CO 2 As a major greenhouse effect gas, the environmental pollution caused by it has attracted worldwide attention. The United States, the United Kingdom and Germany have all studied and formulated emission systems, and Japan has accelerated the CO2 emission system. 2 The research on comprehensive utilization is planned ...

Claims

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Application Information

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IPC IPC(8): C07D317/36C07D317/42C07D317/46
CPCC07D317/36C07D317/42C07D317/46
Inventor 肖林飞岳成涛吴伟张旭
Owner HEILONGJIANG UNIV
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