Gold-catalyzed C(sp2)-C(sp) coupling by alkynylation through oxidative addition of bromoalkynes
A gold(I)-catalyzed cascade cyclization-alkynylation of allenoates using alkynyl bromide to generate β-alkynyl-γ-butenolides was investigated. Whereas alkynyl iodides afforded significant amounts of the homo-coupling of two lactone units, alkynyl bromides led to a selective reaction, and a broad fun...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
15 May 2019
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| In: |
Chemistry - a European journal
Year: 2019, Jahrgang: 25, Heft: 41, Pages: 9624-9628 |
| ISSN: | 1521-3765 |
| DOI: | 10.1002/chem.201902213 |
| Online-Zugang: | Resolving-System, Volltext: https://doi.org/10.1002/chem.201902213 Verlag: https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201902213 
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| Verfasserangaben: | Yangyang Yang, Jasmin Schießl, Sirine Zallouz, Verena Göker, Jürgen Gross, Matthias Rudolph, Frank Rominger, and A. Stephen K. Hashmi |
MARC
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| 520 | |a A gold(I)-catalyzed cascade cyclization-alkynylation of allenoates using alkynyl bromide to generate β-alkynyl-γ-butenolides was investigated. Whereas alkynyl iodides afforded significant amounts of the homo-coupling of two lactone units, alkynyl bromides led to a selective reaction, and a broad functional group tolerance was observed. Under the optimized reaction conditions, it was possible to directly synthesize a large range of β-alkynyl-γ-butenolides in moderate to good yields without the need for any external oxidant. | ||
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