title: Platinum-catalyzed cycloisomerization of 1,4-enynes via activation of a sp3-hybridized C-H bond.
abstract: We report the cycloisomerization of 1-alkenyl-1-alkynylcyclopropanes to cyclooctatriene products catalyzed by PtCl(2)/CO in hot xylene. In contrast to the reported enyne cycloisomerization, this 1,4-enyne cycloisomerization proceeds via an atypical addition of the allyl carbon to the alkyne in a 6-endo-dig cyclization.
authors.affiliation: Department of Chemistry, National Tsing Hua University, Hsinchu, 30013, Taiwan (ROC).
authors.forename: Dhananjayan
authors.initials: D
authors.lastname: Vasu
authors.forename: Arindam
authors.initials: A
authors.lastname: Das
authors.forename: Rai-Shung
authors.initials: RS
authors.lastname: Liu