The catalytic activity of the ruthenium(VI) bis-imido porphyrin complex/TBACl binary system in promoting the CO2 cycloaddition to epoxides forming cyclic carbonates is here reported. The system was very efficient in catalyzing the conversion of differently substituted epoxides under mild experimental conditions (100 degC and 0.6 MPa of CO2). Even if the sole TBACl resulted active under the optimized experimental conditions, the addition of ruthenium species was fundamental to maximizing the reaction productivity both in terms of epoxide conversions and cyclic carbonate selectivities. A preliminary mechanistic study indicated a positive role of ruthenium imido nitrogen atom in activating carbon dioxide.

中文翻译：

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钌(VI)双亚氨基卟啉/TBACl催化环氧化物与CO2反应合成环状碳酸酯

钌(VI)的催化活性之二-亚胺卟啉复合物/TBACl二元体系促进CO2本文报道了与环氧化物的环加成形成环状碳酸酯。该系统在温和的实验条件下（100度C 和 0.6 MPa 的 CO2). 即使唯一的 TBACl 在优化的实验条件下产生活性，在环氧化物转化率和环状碳酸酯选择性方面，钌物质的添加对于最大限度地提高反应生产率也是至关重要的。初步机理研究表明钌亚氨基氮原子在活化二氧化碳中具有积极作用。