title: Gold(I)-catalyzed ring-expanding spiroannulation of cyclopropenones with enynes.
abstract: The gold(I)-catalyzed ring-expanding spiroannulation of cyclopropenones with enynes is reported here. A molecule of water is incorporated into the products during the spiroannulation to afford spirocyclic cyclopentenones containing an alcohol functionality.
authors.affiliation: Department of Applied Chemistry, Tokyo University of Science , 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan.
authors.forename: Takanori
authors.initials: T
authors.lastname: Matsuda
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Sakurai