✦ LIBER ✦
Stereoselective cyclization of α-alkoxyallylstannane alkynals and their Co-complexes. A new route to cyclododecyne-1,2-diol derivatives
✍ Scribed by James A. Marshall; Wei Yi Gung
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- French
- Weight
- 280 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
✦ Synopsis
The a-alkoxyallylstannane dicobalt hexacarbonyl alkynal complex 18 afforded the cyclododecadienyne alcohol complex 19 as a single diastereoisomer in 70% yield upon treatment with BF3 l Et20 at -78°C. The reaction is thought to proceed by prior isomerization to the y-alkoxyallylstannane.