Method for producing aromatic nitrile compound and method for producing carbonic acid ester

JPWO2025009574A1Pending Publication Date: 2025-01-09
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Patent Information

Application Number
JP2025531584
Authority / Receiving Office
JP · JP
Patent Type
Applications
Priority Date
2023-07-04
Filing Date
2024-07-03
Publication Date
2025-01-09

AI Technical Summary

Technical Problem

Conventional methods for producing aromatic nitrile compounds and carbonate esters face challenges in achieving high yields and shortening reaction time, while also suppressing the generation of by-products.

Method used

A method involving the dehydration of aromatic amide compounds in a gas phase with a catalyst at high temperatures, using a diluent and solvent, which increases the reaction rate and selectively produces aromatic nitrile compounds, subsequently improving the regeneration rate and efficiency in producing carbonate esters.

Benefits of technology

This method significantly shortens the reaction time, enhances the yield of aromatic nitrile compounds, and suppresses by-product generation, allowing for efficient production of carbonate esters with reduced equipment size and simplified industrialization.

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Abstract

A method for producing an aromatic nitrile compound is provided by which the aromatic nitrile compound can be selectively obtained in high yield in a shortened reaction time using an aromatic amide compound and which can inhibit the formation of by-products.　The above-mentioned problem was solved by the following method for producing an aromatic nitrile compound.　The method for producing an aromatic nitrile compound includes a dehydration reaction in which an aromatic amide compound is dehydrated. The dehydration reaction includes a contact step in which the aromatic amide compound and a diluent are brought into contact with a catalyst in a gas phase. In the contact step, the temperature at which the aromatic amide compound and the diluent are brought into contact with the catalyst is 300°C or higher.
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