title: Stannylative cycloaddition of enynes catalyzed by palladium-iminophosphine.
abstract: Palladium-iminophosphine complex catalyzes stannylative cycloaddition of conjugated enynes using hexabutyldistannoxane as a stannylating agent to afford highly substituted 3-alkenylphenylstannanes regioselectively. Stannylative cross-cycloaddition reactions between different enynes or between enynes and diynes are also achieved. The reaction is successfully applied to a concise synthesis of alcyopterosin N, which has been isolated recently from sub-Antarctic soft coral, Alcyonium paessleri.
authors.affiliation: Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 Japan. nakao@npc05.kuic-u.ac.jp
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Nakao
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Hirata
authors.forename: Shinjiro
authors.initials: S
authors.lastname: Ishihara
authors.forename: Shinichi
authors.initials: S
authors.lastname: Oda
authors.forename: Tomoya
authors.initials: T
authors.lastname: Yukawa
authors.forename: Eiji
authors.initials: E
authors.lastname: Shirakawa
authors.forename: Tamejiro
authors.initials: T
authors.lastname: Hiyama