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W(CO)5(L)-Catalyzed 6-endo-Selective Cyclization and Formal Cope Rearrangement of Allenyl Silyl Enol Ethers.

✍ Scribed by Tomoya Miura; Koichi Kiyota; Hiroyuki Kusama; Nobuharu Iwasawa

Publisher: John Wiley and Sons
Year: 2007
Weight: 34 KB
Volume: 38
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200718058

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## Abstract An efficient method for the annulation of five‐ and six‐membered rings onto α,β‐enones is described __via__ gold‐catalyzed 5‐ and 6‐__exo__‐__dig__ selective cyclizations of alkynyl silyl enol ethers.