Crosslinked sulfonated polyacrylamide (Cross-PAA-SO3H) attached to nano-Fe3O4 as a superior catalyst has been used for the synthesis of 3-alkyl-4-phenyl-1,3-thiazole-2(3H)-thione derivatives through a three-component reactions of phenacyl bromide or 4-methoxyphenacyl bromide, carbon disulfide and primary amine under reflux condition in ethanol. A proper, atom-economical, straightforward one-pot multicomponent synthetic route for the synthesis of 1,3-thiazoles in good yields has been devised using crosslinked sulfonated polyacrylamide (Cross-PAA-SO3H) tethered to nano-Fe3O4. The catalyst has been characterized by Fourier-transform infrared spectroscopy (FT-IR), scanning electron microscope (SEM), dynamic light scattering (DLS), X-ray powder diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), thermogravimetric analysis (TGA) and vibrating-sample magnetometer (VSM).

中文翻译：

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束缚在纳米Fe ₃ O _4上的交联磺化聚丙烯酰胺（Cross-PAA-SO ₃ H），是合成1,3-噻唑的优良催化剂

连接到纳米Fe3O4上的交联磺化聚丙烯酰胺（Cross-PAA-SO3H）作为高级催化剂已用于通过三步法合成3-烷基-4-苯基-1,3-噻唑-2（3H）-硫酮衍生物在乙醇中回流条件下，苯甲酰基溴或4-甲氧基苯甲酰基溴，二硫化碳和伯胺的多组分反应。已经设计了一种使用高束缚度的纳米合成Fe3O4的交联磺化聚丙烯酰胺（Cross-PAA-SO3H）的正确，原子经济，简单的单锅多组分合成路线，可以高收率合成1,3-噻唑。通过傅里叶变换红外光谱（FT-IR），扫描电子显微镜（SEM），动态光散射（DLS），X射线粉末衍射（XRD），能量色散X射线光谱（EDS）对催化剂进行了表征，