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Productivity Leap in the Homogeneous Ruthenium-Catalyzed Alcohol Amination through Catalyst Recycling Avoiding Volatile Organic Solvents

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Vorholt,  Andreas J.
Research Department Leitner, Max Planck Institute for Chemical Energy Conversion, Max Planck Society;

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Citation

Terhorst, M., Heider, C., Vorholt, A. J., Vogt, D., & Seidensticker, T. (2020). Productivity Leap in the Homogeneous Ruthenium-Catalyzed Alcohol Amination through Catalyst Recycling Avoiding Volatile Organic Solvents. ACS Sustainable Chemistry & Engineering, 8(27), 9962-9967. doi:10.1021/acssuschemeng.0c03413.


Cite as: http://hdl.handle.net/21.11116/0000-0007-D4EC-0
Abstract
A reactive ionic liquid was successfully applied in the homogeneous ruthenium-catalyzed alcohol amination for the first time. Through detailed investigation of the phase behavior and the application of sulfonated ligands, a biphasic system was developed, which fulfils several key points of a sustainable process. This strategy allows, without use of additional volatile organic compounds, a pure product phase to be obtained, enabling the catalyst to be used in repetitive recycling runs. Hence, the productivity of the catalyst was increased fivefold to a cumulative turnover number of more than 2500, which reflects a particularly high catalyst productivity for homogeneous ruthenium-catalyzed alcohol amination.