title: Stereoselective ring expansion via bicyclooxonium ion. A novel approach to oxocanes.
abstract: [reaction: see text] The stereoselective 1,4-rearrangement-ring expansion of tetrahydrofurans via bicyclo[3.3.0]oxonium ions was developed to synthesize oxocanes. On the basis of this rearrangement, the stereoselective synthesis of 2,8-syn-2,8-dimethyloxocane was accomplished.
authors.affiliation: RIKEN (The Institute of Physical and Chemical Research), Wako, Saitama 351-0198, Japan.
authors.forename: Yasuharu
authors.initials: Y
authors.lastname: Sakamoto
authors.forename: Kyoko
authors.initials: K
authors.lastname: Tamegai
authors.forename: Tadashi
authors.initials: T
authors.lastname: Nakata