Direct access to benzo[b]fluorenes via a gold-catalysed A3-coupling strategy
A one-pot atom- and step-economical method for the synthesis of benzo[b]fluorenes, from aldehydes, alkynes and amines, proceeding via an A3-coupling/formal [4 + 2] thermal cyclization is described. The transformation generates water as the only by-product and three new carbon-carbon bonds are simult...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
May 21, 2019
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| In: |
Organic chemistry frontiers
Year: 2019, Jahrgang: 6, Heft: 10, Pages: 1655-1662 |
| ISSN: | 2052-4129 |
| DOI: | 10.1039/C9QO00260J |
| Online-Zugang: | Verlag, Pay-per-use, Volltext: https://doi.org/10.1039/C9QO00260J Verlag, Pay-per-use, Volltext: https://pubs.rsc.org/en/content/articlelanding/2019/qo/c9qo00260j 
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| Verfasserangaben: | Danilo M. Lustosa, Patrick Cieslik, Deborah Hartmann, Tim Bruckhoff, Matthias Rudolph, Frank Rominger and A. Stephen K. Hashmi |
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| 520 | |a A one-pot atom- and step-economical method for the synthesis of benzo[b]fluorenes, from aldehydes, alkynes and amines, proceeding via an A3-coupling/formal [4 + 2] thermal cyclization is described. The transformation generates water as the only by-product and three new carbon-carbon bonds are simultaneously formed. The scope was demonstrated by the synthesis of 32 benzo[b]fluorenes and, by specific designing of starting materials, regiocontrol could be accessed for some substrates. | ||
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