高效且可重复使用的铁催化剂将 CO 转化为有价值的环状碳酸酯。
Efficient and Reusable Iron Catalyst to Convert CO into Valuable Cyclic Carbonates.
机构信息
Centro de Química Estrutural and Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
School of Chemistry and Chemical Engineering, Queen's University Belfast David Keir Building, Stranmillis Road, Belfast, Northern Ireland BT9 5AG, UK.
出版信息
Molecules. 2021 Feb 19;26(4):1089. doi: 10.3390/molecules26041089.
The production of cyclic carbonates from CO cycloaddition to epoxides, using the C-scorpionate iron(II) complex [FeCl{κ-HC(pz)}] (pz = 1-pyrazol-1-yl) as a catalyst, is achieved in excellent yields (up to 98%) in a tailor-made ionic liquid (IL) medium under mild conditions (80 °C; 1-8 bar). A favorable synergistic catalytic effect was found in the [FeCl{κ-HC(pz)}]/IL system. Notably, in addition to exhibiting remarkable activity, the catalyst is stable during ten consecutive cycles, the first decrease (11%) on the cyclic carbonate yield being observed during the 11th cycle. The use of C-scorpionate complexes in ionic liquids to afford cyclic carbonates is presented herein for the first time.
用 C-螺环配体铁(II)配合物 [FeCl{κ-HC(pz)}]（pz = 1-吡唑-1-基）作为催化剂，通过 CO 与环氧化物的环加成反应，在定制的离子液体（IL）介质中，在温和条件（80°C；1-8 巴）下可高产率（高达 98%）得到环状碳酸酯。在 [FeCl{κ-HC(pz)}]/IL 体系中发现了有利的协同催化作用。值得注意的是，该催化剂不仅具有显著的活性，而且在十个连续循环中保持稳定，在第十一个循环中观察到环状碳酸酯产率首次下降（11%）。本文首次提出了在离子液体中使用 C-螺环配体配合物来制备环状碳酸酯。
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