Catalytic aerobic phenolhomo- and cross-coupling reactions with copper complexes bearing redox-active guanidine ligands
Due to their large importance in synthetic chemistry, catalytic C−C coupling reactions of phenols are currently intensively studied. Herein, new copper catalysts for the C−C coupling reaction of phenols using dioxygen as a green oxidizing reagent are reported. By using redox-active guanidine ligands...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
09 April 2019
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| In: |
Chemistry - a European journal
Year: 2019, Jahrgang: 25, Heft: 35, Pages: 8279-8288 |
| ISSN: | 1521-3765 |
| DOI: | 10.1002/chem.201900583 |
| Online-Zugang: | Verlag, Volltext: https://doi.org/10.1002/chem.201900583 Verlag: https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201900583 |
| Verfasserangaben: | Florian Schön, Elisabeth Kaifer, and Hans-Jörg Himmel |
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| 520 | |a Due to their large importance in synthetic chemistry, catalytic C−C coupling reactions of phenols are currently intensively studied. Herein, new copper catalysts for the C−C coupling reaction of phenols using dioxygen as a green oxidizing reagent are reported. By using redox-active guanidine ligands, the activity as well as chemoselectivity in the cross-coupling reaction of non-complementary phenols (between an electron-rich phenol and a less nucleophilic second phenol) is significantly improved. Based on the collected data for several test reactions, a reaction mechanism is proposed. | ||
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