Deactivation of a ruthenium(II) N-heterocyclic carbene p-cymene complex during transfer hydrogenation catalysis
| العنوان: | Deactivation of a ruthenium(II) N-heterocyclic carbene p-cymene complex during transfer hydrogenation catalysis |
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| المؤلفون: | Rami M. Kharbouch, Nicholas A. Bernier, John R. Miecznikowski, Sheila C. Bonitatibus, Christopher A. Van Akin, Brandon Q. Mercado, Matthew A. Lynn, Maura E. Morgan |
| المصدر: | Transition Metal Chemistry. 43:21-29 |
| بيانات النشر: | Springer Science and Business Media LLC, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | 010405 organic chemistry, Metals and Alloys, chemistry.chemical_element, Noyori asymmetric hydrogenation, 010402 general chemistry, Photochemistry, Transfer hydrogenation, 01 natural sciences, Medicinal chemistry, 0104 chemical sciences, Catalysis, Ruthenium, Inorganic Chemistry, chemistry.chemical_compound, chemistry, Catalytic cycle, Materials Chemistry, Carbene, Organometallic chemistry, Acetophenone |
| الوصف: | A ruthenium (II) N-heterocyclic carbene (NHC) complex was synthesized to investigate ligand dissociation as a possible deactivation pathway for the catalytic cycle of a transfer hydrogenation reaction. Diiodo(1,3-dimethylbenzimidazole-2-ylidene)(p-cymene)ruthenium(II) was synthesized for use as the catalytic species and characterized using physico-chemical, spectroscopic methods, and single crystal X-ray diffraction. The transfer of hydrogen from isopropanol to acetophenone was followed using 1H NMR. We observed 94% conversion of the substrate to the alcohol product after 1 h. We also found that the p-cymene complex decomposed during the catalytic reaction to the extent of 80% deactivation after 1 h, based on 1H NMR spectrometry. From Gaussian calculations, an ultraviolet–visible spectrum that is in excellent agreement with the actual spectrum was computed, giving insight into the nature of the absorptions observed experimentally. |
| تدمد: | 1572-901X 0340-4285 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::08ddcb7c940fcb2eedb8a942a162c372Test https://doi.org/10.1007/s11243-017-0189-xTest |
| حقوق: | CLOSED |
| رقم الانضمام: | edsair.doi...........08ddcb7c940fcb2eedb8a942a162c372 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 1572901X 03404285 |
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