Magnetically recyclable γ-Fe2O3–HAP nanoparticles for the cycloaddition reaction of alkynes, halides and azides in aqueous media
作者:Sandip R. Kale、Sandeep S. Kahandal、Manoj B. Gawande、Radha V. Jayaram
DOI:10.1039/c3ra00038a
日期:——
A simple and novel γ-Fe2O3 supported on hydroxyapatite (HAP) heterogeneous catalytic system is described that is useful in the synthesis of disubstituted 1,2,3-triazoles from terminal alkynes and in situ generated organic azide in aqueous media; this green methodology emerges as this new catalyst for the one-pot synthesis of 1,2,3-triazoles can be used in water without the addition of any reagent/base. The catalyst can be successfully recycled five times without significant loss of activity. It is important to note that 100% regioselectivity was observed for the cycloaddition reaction.
描述了一种简单新颖的羟基磷灰石(HAP)负载的γ-Fe2O3异相催化体系,该体系在水中从末端炔烃和原位生成的有机叠氮化合物合成二取代1,2,3-三唑类化合物具有应用价值;这种绿色方法因其新型催化剂可在无需添加任何试剂/碱的水中用于一步合成1,2,3-三唑类化合物而崭露头角。该催化剂可成功回收五次而活性无显著损失。值得注意的是,环加成反应观察到了100%的区域选择性。