The preparation of well-defined porous materials as carriers is critically fundamental for the design of heterogeneous catalysts. In this study, 1,4-Diazabicyclo[2.2.2]octane (DABCO) based hypercross-linked ionic copolymers with well-developed mesopores were fabricated, in which the alkene modified ferric oxides nanoparticles play a vital role for the formation of the mesoporous structure. The magnetic copolymers, fully characterized by N₂ adsorption-desorption, scanning electron microscopy (SEM)/transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermogravimetric analysis (TGA), and vibrating sample magnetometer (VSM), exhibited abundant active ionic centers, rich mesoporosity and moderate surface area. The as-prepared materials were found to be used as efficient catalysts for one-pot synthesis of indole derivatives and 3,4-fused indoles with seven-membered ring and good to excellent products yields were achieved within 10 h. The kinetic study revealed that the meso-porosity increased the catalytic efficiency in terms of reaction rate and yield, albeit with mass transfer resistance produced by mesoporous channels. Finally, the catalyst could be readily recovered using external magnetic force and recycled at least ten times without significant loss in catalytic activities, which makes it attractive for green transformation in chemical industry.

定义明确的多孔材料作为载体是设计非均相催化剂的关键基础。在本研究中，制备了具有发达的中孔的1,4-二氮杂双环[2.2.2]辛烷（DABCO）基超交联离子共聚物，其中烯烃改性的三氧化二铁纳米粒子在中孔的形成中起着至关重要的作用。结构体。完全由N ₂表征的磁性共聚物吸附-解吸，扫描电子显微镜（SEM）/透射电子显微镜（TEM），X射线衍射（XRD），傅里叶变换红外光谱（FT-IR），热重分析（TGA）和振动样品磁力计（VSM），表现出丰富的活性离子中心，丰富的中孔性和适中的表面积。发现所制备的材料可用作一锅合成吲哚衍生物和具有七元环的3，4-稠合的吲哚的有效催化剂，并在10小时内获得了优良的产品收率。动力学研究表明，尽管介孔通道产生了传质阻力，但介孔率提高了反应速率和产率的催化效率。最后，