Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan.
Nanoscale. 2017 Jun 1;9(21):6970-6974. doi: 10.1039/c7nr02466e.
Au-Cu core-shell nanocubes and octahedra synthesized in aqueous solution were employed to catalyze a 1,3-dipolar cycloaddition reaction between phenylacetylene and benzyl azide in water at 50 °C for 3 h. Interestingly, the nanocubes were far more efficient in catalyzing this reaction, giving 91% yield of a regioselective 1,4-triazole product, while octahedra only recorded 46% yield. The Au-Cu nanocubes were subsequently employed to catalyze the click reaction between benzyl azide and a broad range of aromatic and aliphatic alkynes. The product yields ranged from 78 to 99%. Clearly the Au-Cu cubes exposing {100} surfaces are an excellent and green catalyst for click reactions.
在水溶液中合成的 Au-Cu 核壳纳米立方体和八面体被用于在 50°C 下以水为介质，催化苯乙炔和苄基叠氮之间的 1,3-偶极环加成反应 3 小时。有趣的是，纳米立方体在催化该反应方面的效率要高得多，以 91%的收率得到区域选择性 1,4-三唑产物，而八面体的收率仅为 46%。随后，Au-Cu 纳米立方体被用于催化苄基叠氮与一系列芳香族和脂肪族炔烃的点击反应。产物收率范围为 78%至 99%。显然，暴露{100}表面的 Au-Cu 立方体形成为点击反应的一种优秀且绿色的催化剂。
