Facet-Dependent Catalytic Activity of Cu<sub>2</sub>O Nanocrystals in the One-Pot Synthesis of 1,2,3-Triazoles by Multicomponent Click Reactions
作者:Kaushik Chanda、Sourav Rej、Michael H. Huang
DOI:10.1002/chem.201302065
日期:2013.11.18
highly facet‐dependent catalytic activity of Cu2O nanocubes, octahedra, and rhombic dodecahedra for the multicomponent direct synthesis of 1,2,3‐triazoles from the reaction of alkynes, organic halides, and NaN3. The catalytic activities of clean surfactant‐removed Cu2O nanocrystals with the same total surface area were compared. Rhombic dodecahedral Cu2O nanocrystals bounded by 110} facets were much
我们报道了从炔烃,有机卤化物和NaN 3的反应中,Cu 2 O纳米立方体,八面体和菱形十二面体对多组分直接合成1,2,3-三唑的高度刻面依赖性催化活性。比较了具有相同总表面积的清洁的表面活性剂去除的Cu 2 O纳米晶体的催化活性。与110}面接触的菱形十二面体Cu 2 O纳米晶体比暴露于111}面的Cu 2 O八面体的催化活性高得多,而Cu 2 O纳米立方体显示出最慢的催化活性。Cu 2的优异催化活性菱形十二面体归因于110}晶面上完全暴露的表面Cu原子。通过使用这些菱形十二面体Cu 2 O催化剂,在绿色条件下以高收率和高区域选择性合成了一系列1,4-二取代的1,2,3-三唑,其中包括抗癫痫药rufinamide的合成,证明了这些纳米晶体作为潜在的非均相催化剂用于其他重要偶联反应的潜力。