Catalytic activity of Ru/tetrahydropyrimidinium salts system for transfer hydrogenation reactions |
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| Authors: | Emine Özge Karaca Nevin Gürbüz Hakan Arslan Don VanDerveer İsmail Özdemir |
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| Affiliation: | 1. In?nü University, Catalysis Research and Application Center, Malatya, Turkey;2. Department of Chemistry, Faculty of Arts and Science, Mersin University, Mersin, Turkey;3. Department of Chemistry, Clemson University, Clemson, SC, USA |
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| Abstract: | New 1,3‐dialkyltetrahydropyrimidinium salts as NHC precursors have been synthesized and characterized. The in situ prepared three‐component 1,3‐dialkyltetrahydropyrimidinium salts/[RuCl2(p‐cymene)]2 and KOH catalyzes quantitatively the transfer hydrogenation of ketones under mild reaction conditions in 2‐propanol. Also, the molecular structure of 1,3‐bis(2‐methylbenzyl)‐3,4,5,6‐tetrahydropyrimidinium was determined using single‐crystal X‐ray diffraction. Ions of the title compound are linked by C? H…Cl and O? H…Cl hydrogen bonding interactions. The N? C? N bond angle (124.3(2)°) and C? N bond lengths (1.316(3) and 1.314(3) Å) confirm the existence of strong resonance in this part of the molecule. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | ruthenium tetrahydropyrimidin‐2‐ylidene N‐heterocyclic carbine transfer hydrogenation ketone |
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