The magnetic DAR-chitosan was synthesized by condensation of magnetic chitosan [Fe₃O₄@CS] with freshly synthesized diacetylresorcinol (here calls DAR) as a cross-linking agent; the Schiff base precursor on the as-prepared magnetic DAR-chitosan polymer can be coordinated with Au (III) to give magnetic DAR chitosan-based Au (III) Schiff base complex (Fe₃O₄@CS/DAR-AuCl₃). The structural properties of Fe₃O₄@CS/DAR-AuCl₃ have been investigated by SEM, TEM, EDX, XRD, FT-IR and XPS (techniques) analysis. The XPS study proved the presence of Au species Schiff base complex as an ion and nanoparticles onto the magnetic DAR crosslinked chitosan. Subsequently, the synthesized Fe₃O₄@CS/DAR-AuCl₃ used as sustainable catalysts in A³ coupling reactions leading to the synthesis of propargylamine, a pharmaceutical building blocks, under mild conditions in high yields of 80–92%. Furthermore, it was proved that the magnetic Fe₃O₄@CS/DAR-AuCl₃ was easily recovered and reached 76% of the initial activity after 8 times, which revealed good reuse capacity.

磁性DAR-壳聚糖是通过磁性壳聚糖 [Fe ₃ O ₄ @CS] 与新合成的二乙酰间苯二酚（此处称为 DAR）作为交联剂缩合合成的；所制备的磁性 DAR-壳聚糖聚合物上的 Schiff 碱前体可以与 Au (III) 配位，得到磁性 DAR 壳聚糖基 Au (III) Schiff 碱配合物（Fe ₃ O ₄ @CS/DAR-AuCl ₃）。Fe ₃ O ₄ @CS/DAR-AuCl ₃的结构性质已经通过 SEM、TEM、EDX、XRD、FT-IR 和 XPS（技术）分析进行了研究。XPS 研究证明金物质席夫碱复合物作为离子和纳米粒子存在于磁性 DAR 交联壳聚糖上。随后，合成的 Fe ₃ O ₄ @CS/DAR-AuCl ₃用作 A ³偶联反应中的可持续催化剂，导致在温和条件下以 80-92% 的高产率合成炔丙胺，这是一种药物结构单元。此外，证明磁性Fe ₃ O ₄ @CS/DAR-AuCl ₃很容易回收，8次后达到初始活性的76%，显示出良好的再利用能力。