Highly Active Nickel Catalysts for the Isomerization of Unactivated Vinyl Cyclopropanes to Cyclopentenes

Inflatable rings: Low-valent Ni0–nitrogen-heterocyclic carbene catalysts were found to isomerize activated and unactivated vinyl cyclopropanes to their respective substituted cyclopentenes under mild conditions and in high yields (see scheme, cod=cycloocta-1,5-diene). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2004/z53469_s.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.