Anwendung der α-Alkinon-Cyclisierung: Totalsynthese von (±)-Alben
✍ Scribed by Giuseppe G. G. Manzardo; Martin Karpf; André S. Dreiding
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- German
- Weight
- 370 KB
- Volume
- 66
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
Application of the α‐Alkynone Cyclization: Total Synthesis of (±)‐Albene
A synthesis of the racemic form of the natural tricyclic hydrocarbon albene (1) from the Diels‐Alder adduct 2 of tiglyl chloride and cyclopentadiene is described (24% yield). The key step 5→6 involves a thermal α‐alkynone cyclization (Scheme 3), which is able to establish a new quarternary C‐atom at an unactivated position with a high degree of regiospecificity.
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