Amino acid-paired dipyridine polymer as efficient metal- and halogen-free heterogeneous catalysts for cycloaddition of CO2 and epoxides into cyclic carbonates

作者：Jiang, Yuchen; Li, Jingjing; Jiang, Pingping; Li, Yue; Leng, Yan^*

来源：Catalysis Communications, 2018, 111: 1-5.

DOI：10.1016/j.catcom.2018.03.030

• Chemical fixation of CO2
• Ionic polymers
• Metal- and halogen-free catalysts
• Cycloaddition reaction
• Organocatalysts

A series of amino acid-paired dipyridine polymers were synthesized and firstly used as metal-and halogen-free heterogeneous organocatalysts for chemical fixation of CO2 into cyclic carbonates. Glutamic acid (Glu)-paired dipyridine polymer (Pbpy-Glu) possesses the highest catalytic efficiency for cycloaddition reaction under solvent -free conditions, and provides a reasonable recycled process. The mechanism investigation based on the FTIR analysis of catalyst intermediates suggests that the intermolecular synergistic effect involving the -N+ ions in pyridine, -COO- groups in Glu, as well as the -(COOH3N)-H-center dot center dot center dot- ion pairs contributes to the good catalytic performance of Pbpy-Glu.

• 出版日期2018-6
• 单位江南大学