Tandem Isobenzofuran Formation−Diels Alder Reactions in the Coupling of Carbene Complexes with 2-Alkynylbenzaldehyde Derivatives Featuring an Alkyne-Dienophile Tether
| Autor: | Luo, Y., Herndon, J. W. |
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| Zdroj: | Organometallics; June 2005, Vol. 24 Issue: 13 p3099-3103, 5p |
| Abstrakt: | The coupling of carbene complexes and 2-alkynylbenzaldehyde derivatives has been examined for systems where the alkyne is further linked to an alkene. This reaction proceeds via generation of an isobenzofuran followed by a stereoselective intramolecular Diels−Alder reaction, followed by opening of the resulting oxanorbornene ring. A variety of hydrophenanthrene derivatives and heterocyclic analogues have been produced in this reaction. In one case the intramolecular Pauson−Khand reaction is a competing process. |
| Databáze: | Supplemental Index |
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