We report a class of organic–inorganic hybrid material based on nano-colloidal silica-tethered polyhedral oligomeric silsesquioxanes with eight branches of 3-aminopropyltriethoxysilane [nano-colloidal silica@APTPOSS (a series of polyhedral oligomeric silsesquioxanes with eight branches of 3-aminopropyltriethoxysilane)]. It was characterized by 1H NMR spectroscopy, dynamic light scattering, scanning electron microscope, energy dispersive spectroscopy and thermogravimetric analysis. An easy and rapid method for the synthesis of bis-thiazolidinones has been presented by one-pot pseudo-five-component reaction of benzaldehydes, ethylenediamine and 2-mercaptoacetic acid using nano-colloidal silica@APTPOSS. The reusability of the catalyst and little catalyst loading, excellent yields, short reaction times, using the sonochemical procedure as a green process and an alternative energy source are some benefits of this method.
我们报道了一类基于纳米胶体二氧化硅-连接的八支3-氨丙基三乙氧基硅烷聚合物的有机-无机杂化材料[nano-colloidal silica@APTPOSS(一系列八支3-氨丙基三乙氧基硅烷聚合物的聚合物八面体硅氧烷)]。它通过1H NMR光谱、动态光散射、扫描电子显微镜、能量色散谱和热重分析进行表征。使用nano-colloidal silica@APTPOSS,通过一锅伪五组分反应的简易快速方法合成了双噻唑烷酮。反应的五个组分是苯甲醛、乙二胺和2-巯基乙酸。该方法的优点包括催化剂的可重复使用性和少量催化剂负载、产率高、反应时间短、使用超声波程序作为绿色工艺和替代能源来源。