A Chitosan Derivative Containing Both Carboxylic Acid and Quaternary Ammonium Moieties for the Synthesis of Cyclic Carbonates

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• 作者：Dr.  Vincent Besse ; Dr.  Nicolas Illy ; Dr.  Ghislain David ; Dr.  Sylvain Caillol and Prof.  Bernard Boutevin
• 刊名：ChemSusChem
• 出版年：2016
• 出版时间：August 23, 2016
• 年：2016
• 卷：9
• 期：16
• 页码：2167-2173
• 全文大小：731K
• ISSN：1864-564X

文摘

Chitosan, a renewable feedstock, is modified and used as a catalytic support in the presence of potassium iodide. The system is highly efficient towards the incorporation of carbon dioxide (CO₂) into epoxides. It demonstrates very good thermal stability and is recyclable more than five times without loss of activity. The optimal reaction conditions were determined using allylglycidyl ether as a model and extended to a wide range of other epoxides. Cyclic carbonates were obtained with very high yield in a few hours under mild conditions (2–7 bar≈0.2–0.7 MPa, 80 °C) and no solvent.