In the present study Cu^II anchored onto the magnetic talc (γ‐Fe₂O₃/ talc /Cu^II NPs) was successfully synthesized and characterized by FT‐IR, XRD, TEM, FE‐SEM, EDX, VSM, and ICP‐OES techniques. Structural characterizations reveal that the γ‐Fe₂O₃/talc/Cu^II NPs are superparamagnetic in nature, structured as a composite with average diameter of about 19–31 nm. The prepared nanostructured catalyst efficiently catalyzed the preparation of 1H‐pyrazolo[1,2‐b] phthalazine‐5,10‐diones at the gram scale without the use of the toxic organic solvents. The magnetically separable and environmentally friendly nanostructured catalyst remains quite stable during reaction conditions and reused for at least five recycle runs.

中文翻译：

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CuII固定在磁性滑石上：一种新型的磁性纳米结构催化剂，用于一锅级合成1H-吡唑并[1,2-b]邻苯二甲酰5,10-二酮衍生物

在本研究中的Cu ^II锚定在所述磁性滑石（γ-的Fe ₂ ö ₃ /滑石/铜^II NPS）通过FT-IR，XRD，TEM，FE-SEM，EDX，VSM和ICP-成功合成和表征OES技术。结构表征表明，所述γ-的Fe ₂ ö ₃ /滑石/铜^II的NP在本质上的超顺磁性，构成为具有约19-31纳米的平均直径的复合物。制备的纳米结构催化剂有效地催化了1 H的制备不使用有毒有机溶剂的克级吡唑并[1,2-b]酞嗪-5,10-二酮。磁性可分离且环境友好的纳米结构催化剂在反应条件下保持相当稳定，并至少可重复使用五次。