Stereocontrolled Synthesis of Spiro[n.2]alkenes by Ring Contraction of Fused-Cyclobutanols
β Scribed by Kiyosei Takasu; Yuuki Nagamoto; Yoshiji Takemoto
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 276 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0947-6539
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An efficient pathway for the stereocontrolled synthesis of functionalized, angularly fused tricyclic ring systems from readily available (1-alkynyl)carbene complexes [(OC) 5 M C(OEt)-CCR] (M Cr, W; R Ph, c-C 6 H 9 ) is described. The synthesis involves the formation of a 1-metalla-1,3,5-hexatriene f