Stannylative cycloaddition of enynes catalyzed by palladium-iminophosphine |
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Authors: | Nakao Yoshiaki Hirata Yasuhiro Ishihara Shinjiro Oda Shinichi Yukawa Tomoya Shirakawa Eiji Hiyama Tamejiro |
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Affiliation: | Department of Material Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 Japan. nakao@npc05.kuic-u.ac.jp |
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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. |
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