Solvent-induced selectivity switching: intermolecular allylsilylation, arylsilylation, and silylation of alkynes over montmorillonite catalyst |
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| Authors: | Ken MotokuraShigekazu Matsunaga Akimitsu MiyajiTatsuaki Yashima Toshihide Baba |
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| Institution: | a Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8502, Japan
b Advanced Research Institute for the Sciences and Humanities, Nihon University, 12-5 Gobancho, Chiyoda-ku, Tokyo 102-8251, Japan |
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| Abstract: | Proton-exchanged montmorillonite showed catalytic activity for intermolecular allylsilylation, arylsilylation, and terminal silylation of alkynes with allylsilanes. The reaction selectivity greatly depended on the solvent used. Reactions proceeded with various terminal alkynes and allylsilanes in good to moderate yields. The reaction pathways involving cationic Si species on the montmorillonite surface were also investigated. |
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| Keywords: | Proton-exchanged montmorillonite Carbosilylation Silylation Alkyne Heterogeneous catalysis |
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