title: Rh(I)-catalyzed cyclization of 1-arylprop-2-yn-1-ol derivatives utilizing rhodium 1,4-migration.
abstract: A highly useful method for the construction of cyclopentanone derivatives fused with aromatic ring based on hydrorhodation-1,4-rhodium migration sequence is achieved. Treatment of 1-aryl-prop-2-yn-1-ols, which are easily accessible via an addition of acetylides to the corresponding aryl aldehydes, with a catalytic amount of [Rh(cod)2]2(BF4) and P(p-tolyl)3 in the presence of a base gives cyclopentanone derivatives in moderate to good yield.
authors.affiliation: Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
authors.forename: Hokuto
authors.initials: H
authors.lastname: Yamabe
authors.forename: Akio
authors.initials: A
authors.lastname: Mizuno
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kusama
authors.forename: Nobuharu
authors.initials: N
authors.lastname: Iwasawa