Dication ionic liquid and method for catalytically synthesizing cyclic carbonate through dication ionic liquid

Abstract

The invention discloses dication ionic liquid. The structural formula of the dication ionic liquid is shown in the specification, wherein n is equal to 1 or 2, and R1 is equal to CH3 or CH2CH3. The invention further discloses a method for catalytically synthesizing cyclic carbonate through the dication ionic liquid. Specifically, cyclic carbonate is synthesized in the mode that CO2 and an epoxy compound are subjected to a cycloaddition reaction. The problems that currently, in the process of synthesis with CO2 and the epoxy compound, CO2 activation is difficult, the activity of a catalyst is not high, a co-catalyst and an organic solvent are used, and reaction conditions are severe are solved. The dication ionic liquid and the method have the advantages that the synthesis process is simple, the activity of the catalyst is high, the catalysis conditions are mild, environmental friendliness is achieved, no other organic solvents or co-catalysts are used, and the catalyst does not containmetal.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and in particular relates to a dicationic ionic liquid and a method for catalyzing and synthesizing cyclic carbonate using it. Background technique [0002] With the rapid development of economy and industrialization, the excessive consumption of fossil fuels has resulted in serious energy crisis and environmental problems. CO 2 It is the main gas of the greenhouse effect, and it is also an abundant, clean, non-toxic, and recyclable carbon resource, and can be used as a C1 building block to replace toxic and harmful phosgene and CO in the synthesis of organic intermediates and materials. How to effectively control CO in the atmosphere 2 Reducing its impact on the atmospheric environment and improving energy conditions have become one of the major environmental issues that mankind needs to solve urgently in the new century. In this situation, the effective capture and fixation of CO ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a dicationic ionic liquid in order to solve the technical problems of using toxic organic solvents and metal co-catalysts, high catalyst costs, complex synthesis process, and harsh reaction conditions in the existing method for synthesizing cyclic carbonates. And the method of using it to catalyze the synthesis of cyclic carbonate

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