Gold(I)‐Catalyzed Asymmetric Cycloisomerization of Eneallenes into Vinylcyclohexenes

Coming around: Cycloisomerization of eneallenes by cationic gold (I) catalysts produces vinylcyclohexene derivatives in up to 77 % ee, using 3, 5-xylyl-binap (AuCl) 2 and AgOTf additive (see scheme; 3, 5-xylyl-binap=2, 2′-bis (di (3, 5-xylyl) phosphino) -1, 1′-binaphthyl). The procedure is amenable to the synthesis of mono- and bicyclic products and is tolerant of ester, alcohol, and amide groups. Supporting information for this article is available on the WWW under http: //www. wiley-vch. de/contents/jc₂002/2007/z701959ₛ. pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.