title: Metathesis route to bridged metallocenes.
abstract: A variety of bridged metallocenes of Fe(II), Ru(II), Zr(IV), or Hf(IV) were prepared in good yield by the interannular ring-closing metathesis reaction of 1,1'-diallylmetallocenes using the Ru-carbene catalyst, and the present method was extended to diastereoselective reaction to give dl- or meso-bridged metallocenes with excellent stereoselectivity.
authors.affiliation: Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
authors.forename: Masamichi
authors.initials: M
authors.lastname: Ogasawara
authors.forename: Takashi
authors.initials: T
authors.lastname: Nagano
authors.forename: Tamio
authors.initials: T
authors.lastname: Hayashi