Phosphine–Imidazolyl Ligands for the Efficient Ruthenium‐Catalyzed Hydrogenation of Carboxylic Esters |
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| Authors: | Dr Kathrin Junge Bianca Wendt Felix Alexander Westerhaus Dr Anke Spannenberg Dr Haijun Jiao Prof Dr Matthias Beller |
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| Institution: | Leibniz‐Institut für Katalyse e.V. an der Universit?t Rostock, Albert‐Einstein‐Stra?e 29a, 18059 Rostock (Germany), Fax: (+49)?381‐1281‐5000, Tel.: (+49)?381‐1281‐113 |
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| Abstract: | The synthesis of phosphine–imidazolyl ligands 1 and 2 in good yields is presented. In combination with {Ru(benzene)Cl2}2], ligands 1 c and 1 e formed efficient catalyst systems for the selective hydrogenation of various carboxylic esters into their corresponding primary alcohols. Furthermore, the structures of four ruthenium complexes with ligands 1 b , 1 c , 1 d , and 1 e were determined by X‐ray crystallography, which showed the formation of different coordination modes depending on the ligand structure. |
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| Keywords: | alcohols esters hydrogenation ligand design ruthenium |
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