Single-Walled Carbon Nanotubes as a Support for Palladium-Catalyzed Aquachemical Cross-Coupling Reactions
Taku Kitanosono1, Shunsuke Shiramizu1, Yasuhiro Yamashita1
1Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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We developed SWNT-supported palladium catalysts that enable cross-couplings in water without surfactants or cosolvents. Even water-insoluble solid aryl bromides reacted efficiently with simple stirring. Pyrene-1-sulfonate anchoring ensured high activity, recyclability, and undetectable leaching. Unlike mechanochemical methods, our stirring protocol avoids energy-intensive steps. This strategy highlights the intrinsic advantages of SWNTs in stabilizing reactive metal species, offering a sustainable and versatile platform for advancing redox-active organometallic chemistry in water.
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