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Studies of the zinc(II) catalysed addition of silyl enol ethers to cyclic enol ethers

✍ Scribed by J.R. Studley; M. Wills

Book ID
107812474
Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
323 KB
Volume
455
Category
Article
ISSN
0022-328X

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The first addition of silyl enol ethers
The first addition of silyl enol ethers to internal unactivated alkynes
✍ Ken-ichiro Imamura; Eiji Yoshikawa; Vladimir Gevorgyan; Yoshinori Yamamoto πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 French βš– 227 KB

The EtAICl2-mediated intramolecular addition of silyl enol ethers to both terminal and internal unactivated alkyttes, bearing alkyl and phenyl susbstituents at the alkyne moiety, proceeded exclusively in the endo-fashion to give mono-and bicyclic p,T-unsaturated ketones in good to excellent yields.