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A convenient synthesis of 1,2-disubstituted cyclooctatetraenes

✍ Scribed by James H. Rigby; Namal C. Warshakoon

Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
178 KB
Volume
38
Category
Article
ISSN
0040-4039

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✦ Synopsis

Substituted cyclooctatetraenes can be prepared in two steps employing a Cr-(0)-promoted [6n+2n] thiepin dioxide-alkyne cycloaddition followed by photoactivated sulfur dioxide extrusion.

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A convenient synthesis of 2,2-disubstitu
A convenient synthesis of 2,2-disubstituted-1-cyclopentanones
✍ Robert T. Conley πŸ“‚ Article πŸ“… 2010 πŸ› Elsevier Science 🌐 English βš– 207 KB

## Abstract The synthesis of 2,2‐dimethyl‐ and 2,2‐diphenylcyclopentanone in high yield is reported by the ring expansion of the corresponding 1‐(disubstituted carbinol)‐1‐hydroxycyclobutane in polyphosphoric acid. Modifications of the general synthetic route using reported reactions offers a gener