C-3 dicarbonyl indoles via oxidative cross-coupling of styrenes with indoles under metal-free conditions has been developed. Moreover, a broad scope of C-3 dicarbonyl indoles in moderate to good yields were obtained, and a plausible mechanism is proposed based on control and isotope-labeling experiments. A new and efficient method for the synthesis of C-3 dicarbonyl indoles via oxidative cross-coupling
In the present paper, an efficient Cu-catalyzed regioselective acylation of indoles with phenylglyoxals was developed which is the first example of indolyl diketones synthesis by a heterogeneous catalyst. The magnetic polyacrylonitrile was synthesized through anchoring acrylonitrile monomers on Fe3O4 nanoparticles surface and then modified with 2-aminopyridine. At the final step, copper nanoparticles
在本文中,开发了一种有效的铜催化吲哚与苯基乙二醛的区域选择性酰化,这是通过非均相催化剂合成吲哚二酮的第一个例子。通过将丙烯腈单体锚定在Fe3O4纳米粒子表面,然后用2-氨基吡啶修饰合成磁性聚丙烯腈。在最后一步,将铜纳米颗粒固定在聚合物载体上,该聚合物载体含有来自聚丙烯腈的官能化腈基团的稳定配体。使用不同的技术,如傅里叶透射红外光谱、X 射线衍射、场发射扫描电子显微镜、透射电子显微镜和热重分析来证明聚合物催化剂的结构。最后,磁性 PAN Cu 催化剂作为一种高效的磁性非均相催化体系以良好至高产率合成 3-酰化吲哚的活性进行了研究。说明了多种 3-酰化吲哚衍生物的合成很容易获得这一重要的构件类。