Polyhedral Cu2O Crystals for Diverse Aryl Alkyne Hydroboration Reactions |
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Authors: | Hsin-Yi Tsai Dr Mahesh Madasu Prof Michael H Huang |
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Institution: | 1. Department of Chemistry, National Tsing Hua University, Hsinchu, 30013 Taiwan
These authors contributed equally to this work.;2. Department of Chemistry, National Tsing Hua University, Hsinchu, 30013 Taiwan |
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Abstract: | Cu2O cubes, octahedra, and rhombic dodecahedra have been used to examine facet-dependent catalytic activity in aryl alkyne hydroboration reactions. Although the reaction can proceed by using ethanol or other alcohols as solvent, the use of 1,4-dioxane gave the best product yield. All particle shapes gave exclusively the E-product, but the rhombic dodecahedra exposing {110} surfaces were consistently far more reactive than the other particle morphologies. A product yield of 99 % was achieved by using Cu2O rhombic dodecahedra to catalyze the hydroboration of phenylacetylene at 60 °C for 5 h. The rhombic dodecahedra have been shown to catalyze a variety of substituted aryl alkynes, which demonstrates their potential as a versatile catalyst. |
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Keywords: | copper facet-dependent properties heterogeneous catalysis hydroboration nanocrystals |
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