Cooperative effect from cation and anion of pyridine-containing anion-based ionic liquids for catalysing CO2 transformation at ambient conditions

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2017,（7）
• 页码范围: 958-963
• 页数: 6页
• 语种: 英文
• DOI: 10.1007/s11426-016-0507-7

摘要

Pyridine-containing anion-based ionic liquids (PA-ILs) with two kinds of interaction sites to bind CO2,e.g.,[P4444][2-OP],were found to be highly efficient for catalysing the cycloaddition reactions of atmospheric CO2 with epoxides at room temperature under metal-and halogen-free conditions,producing a series of cyclic carbonates in high yields.It was demonstrated that the cooperative interaction from two interaction sites in the anions of PA-ILs activated CO2,while the cation activated the epoxides substrates via coordination to the central P1 unit,thus resulting in the high activity of the IL catalysts.