gel (IL-SO3H-SiO2) has been prepared, and characterized by FT-IR, XRD, TGA, SEM and EDX spectra. Then, IL-SO3H-SiO2 was utilized as an efficient and heterogeneous catalyst for the synthesis of indoles via the one-pot Fischer reaction of phenyl hydrazines with ketones or aldehydes at room temperature. The heterogeneous catalyst could be recovered easily by filtration and reused many times without significant
在这项工作中,已经制备了基于
硅胶的官能化活性物质 4-甲基
苯磺酸基
离子液体 (IL-SO3H-SiO2),并通过 FT-IR、XRD、TGA、
SEM 和 EDX 光谱对其进行了表征。然后,IL-SO3H-SiO2 被用作一种高效的多相催化剂,通过苯
肼与酮或醛在室温下的一锅费歇尔反应合成
吲哚。多相催化剂可以通过过滤轻松回收并多次重复使用而不会显着降低其催化活性。图形摘要