title: Enantioselective preparation of 8-oxabicyclo[3.2.1]octane derivatives via asymmetric [3+2]-cycloaddition of platinum-containing carbonyl ylides with vinyl ethers.
abstract: A catalytic asymmetric synthesis of 8-oxabicyclo[3.2.1]octane derivatives was achieved through the [3+2]-cycloaddition of the platinum-containing carbonyl ylides generated from acyclic gamma,delta-ynones on treatment with 10 mol % of PtCl(2)-Walphos and AgSbF(6). Synthetically useful 8-oxabicyclo[3.2.1]octane derivatives were obtained in good yields and mostly in over 90% ee's.
authors.affiliation: Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8551, Japan.
authors.forename: Kento
authors.initials: K
authors.lastname: Ishida
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Kusama
authors.forename: Nobuharu
authors.initials: N
authors.lastname: Iwasawa