title: Nickel-catalyzed [3+1+1] cycloaddition reactions of alkenyl Fischer carbene complexes with methylenecyclopropanes.
abstract: Methylenecyclopentanones were synthesized by the nickel-catalyzed [3+1+1] cycloaddition reactions of alkenyl Fischer carbene complexes with methylenecyclopropanes. The methylenecyclopropane was transformed into the C(2)-symmetric bis-cyclopentapyridazine derivative by reacting with p-toluenesulfonyl hydrazine.
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka Prefecture University, Sakai, Osaka 599-8531, Japan. kamikawa@c.s.osakafu-u.ac.jp
authors.forename: Ken
authors.initials: K
authors.lastname: Kamikawa
authors.forename: Yasunori
authors.initials: Y
authors.lastname: Shimizu
authors.forename: Shin
authors.initials: S
authors.lastname: Takemoto
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Matsuzaka