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Ruthenium- and platinum-catalyzed sequential reactions: selective synthesis of fused polycyclic compounds from propargylic alcohols and alkenes
Authors:Nishibayashi Yoshiaki  Yoshikawa Masato  Inada Youichi  Hidai Masanobu  Uemura Sakae
Affiliation:Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan. ynishiba@scl.kyoto-u.ac.jp
Abstract:A simple method for the preparation of fused polycyclic compounds by an intramolecular cyclization of propargylic alcohols bearing an alkene moiety at a suitable position has been developed, where the presence of both Ru and Pt catalysts promotes a sequence of catalytic cycles in the same medium. This sequential system can be applied to an intermolecular reaction between a propargylic alcohol and an alkene to obtain the corresponding bicyclo[3,1,0]hex-2-ene derivative. These sequential reactions provide a conceptually new type of cycloaddition system between propargylic alcohols and alkenes.
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