catalyst were measured by vibrating sample magnetometer (VSM). The efficiency of the [Fesipmim]Cl catalyst was checked by using it for the synthesis of different derivatives of dihydropyridine through Hantzsch reaction via a three-component coupling reaction of substituted benzaldehydes, ethyl/ methyl acetoacetate and ammonium acetate. The formation and structures of all the synthesized compounds were confirmed
摘要 在本研究中,合成了磁性
铁氧体纳米粒子(
铁氧体NPs)并通过溶胶-凝胶法用
二氧化硅(ferrite @ SiO 2 NPs)进行了包覆。然后,制备
二氧化硅丙基甲基
咪唑氯化物
离子液体[Sipmim] Cl,并与上述制备的
铁氧体@SiO 2 NPs连接,以合成
铁氧体
二氧化硅丙基甲基
咪唑氯化物[Fesipmim] Cl催化剂。[Fesipmim] Cl催化剂的形成通过傅立叶变换红外(FT-IR)光谱分析确认。X射线衍射(XRD)分析证实了
铁氧体NPs和
铁氧体@SiO 2 NPs的结构。透射电子显微镜(
TEM)证明成功形成了
铁素体NP和
铁素体@SiO 2NP。扫描电子显微镜(
SEM)结果表明,
铁氧体NPs,
铁素体@SiO 2 NPs和[Fesipmim] Cl的形态发生了变化。通过振动样品磁力计(VSM)测量[Fesipmim] Cl催化剂的磁性。[Fesipmim] Cl催化剂的效率通过使用