The gold-catalyzed hydroarylation of alkynes with electron-rich heteroarenes: a kinetic investigation and new synthetic possibilities
The gold-catalyzed mono-hydroarylation and two-fold hydroarylation of alkynes with electron-rich heteroarenes was analyzed by a 1H NMR kinetic study. The obtained rate constants for the decreasing alkyne concentration provide information on the reactivity of this addition reaction. The examinations...
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| Hauptverfasser: | , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
January 26, 2017
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| In: |
Advanced synthesis & catalysis
Year: 2017, Jahrgang: 359, Heft: 4, Pages: 639-653 |
| ISSN: | 1615-4169 |
| DOI: | 10.1002/adsc.201600940 |
| Online-Zugang: | Verlag, Volltext: http://dx.doi.org/10.1002/adsc.201600940 Verlag, Volltext: http://onlinelibrary.wiley.com/doi/10.1002/adsc.201600940/abstract Verlag, Volltext: http://onlinelibrary.wiley.com/doi/10.1002/adsc.201600940/epdf 
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| Verfasserangaben: | Jasmin Schießl, Matthias Rudolph, A. Stephen K. Hashmi |
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| 245 | 1 | 4 | |a The gold-catalyzed hydroarylation of alkynes with electron-rich heteroarenes |b a kinetic investigation and new synthetic possibilities |c Jasmin Schießl, Matthias Rudolph, A. Stephen K. Hashmi |
| 264 | 1 | |c January 26, 2017 | |
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| 520 | |a The gold-catalyzed mono-hydroarylation and two-fold hydroarylation of alkynes with electron-rich heteroarenes was analyzed by a 1H NMR kinetic study. The obtained rate constants for the decreasing alkyne concentration provide information on the reactivity of this addition reaction. The examinations show the orthogonal reactivity of gold and a proton for the two reaction steps. The first hydroarylation is exclusively promoted by gold(I), whereas the second step is premised on a proton which will be reversibly derived from the formation of σ,π-acetylide complexes from the terminal alkynes or by interaction with solvents. Based on kinetic data, it was possible to synthesize a large range of mono-adducts in moderate to good yields, furthermore the synthesis of hetero-di-adducts, bearing two different substituents, was explored. | ||
| 650 | 4 | |a gold catalysis | |
| 650 | 4 | |a hydroarylation | |
| 650 | 4 | |a kinetic studies | |
| 650 | 4 | |a nucleophilicity scale | |
| 650 | 4 | |a proton catalysis | |
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