A Carbon Nanotube Confinement Strategy to Implement Homogeneous Asymmetric Catalysis in the Solid Phase |
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| Authors: | Kazuki Hashimoto Dr Naoya Kumagai Prof Dr Masakatsu Shibasaki |
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| Affiliation: | 1. Institute of Microbial Chemistry (BIKAKEN) Tokyo, 3‐14‐23 Kamiosaki, Shinagawa‐ku, Tokyo 141‐0021 (Japan), Fax: (+81)?3‐3441‐7589;2. JST, ACT‐C, 3‐14‐23 Kamiosaki, Shinagawa‐ku, Tokyo 141‐0021 (Japan) |
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| Abstract: | A readily recyclable asymmetric catalyst has been developed based on the self‐assembly of a homogeneous catalyst in a fibrous network of multiwalled carbon nanotubes (MWNTs). Dimerization of an amide‐based chiral ligand with a suitable spacer allows for the efficient formation of a heterogeneous catalyst by self‐assembly on addition of Er(OiPr)3. The self‐assembly proceeds in the MWNT fibrous network and small clusters of assembled catalyst are confined in the MWNTs, producing an easily handled solid‐phase catalyst. The resulting MWNT‐confined catalyst exhibits a good catalytic performance in a catalytic asymmetric Mannich‐type reaction, which can be conducted in a repeated batch system and in a continuous‐flow platform. |
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| Keywords: | asymmetric catalysis carbon nanotubes erbium heterogeneous catalysis Mannich reaction |
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