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Synfacts 2006(5): 0434-0434
DOI: 10.1055/s-2006-934369
DOI: 10.1055/s-2006-934369
Synthesis of Heterocycles
© Georg Thieme Verlag Stuttgart · New York
Fischer Carbene Complexes in Annulation Reactions to Heterocyclic Enyne Aldehydes
J. Zhang, Y. Zhang, W. F. K. Schnatter, J. W. Herndon*
New Mexico State University, Las Cruces and Long Island University, Brooklyn, USA
Further Information
Publication History
Publication Date:
21 April 2006 (online)
![](https://www.thieme-connect.de/media/synfacts/200605/lookinside/thumbnails/10.1055-s-2006-934369-1.jpg)
Significance
Indole, imidazole and pyrazole enyne aldehydes undergo reactions with γ,δ-unsaturated Fischer carbene complexes to form multi-ring fused heterocyclic systems. These complex reactions allow the rapid assemblage of heterocyclic derivatives with carbo and heterocyclic frameworks. Hypothetical intermediates are proposed for these transformations. The scope and limitations of these methods were not widely tested.