The steelmaking slag (SMS) is a by-product of steelmaking factories and a valuable industrial waste, which is a heterogeneous mixture of some common metal oxides such as SiO₂, Al₂O₃, Fe₂O₃, CaO, and MgO. The SMS is a readily available, non-toxic, environmentally friendly, thermally stable, and reusable magnetic heterogeneous catalyst that can be easily handled and it showed a good magneto-catalytic performance. In this work, a successful and versatile water preparation of 5-substituted-1H-tetrazoles in the presence of steelmaking slag as a catalyst is reported via click reaction. A series of aliphatic and aromatic nitriles underwent via [3 + 2] cycloaddition reaction with sodium azide under standard conditions to afford a diverse array of 5-substituted-1H-tetrazoles in good to excellent yields. The reactions occur at almost low reaction times, with no need of inert reaction conditions and avoids usage or formation of any potentially toxic or explosive chemicals. The SMS catalyst was characterized by FT-IR spectroscopy, powder X-ray diffraction, energy‐dispersive X‐ray mapping and scanning electron microscopy, and X-ray fluorescence techniques. Moreover, the procedure is simple, cost effective, and reliable that holds potential for further applications in organic syntheses and industrial requirements.

Graphical Abstract

中文翻译：

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炼钢渣作为一种宝贵的工业废料在水中制备 5-取代-1H-四唑

炼钢渣（SMS）是炼钢厂的副产品和有价值的工业废料，是一些常见的金属氧化物如SiO ₂、Al ₂ O ₃、Fe ₂ O ₃、CaO和MgO的非均相混合物。SMS是一种容易获得、无毒、环境友好、热稳定、可重复使用的磁性非均相催化剂，易于处理，并表现出良好的磁催化性能。在这项工作中，一种成功且用途广泛的 5-取代-1 H水制备方法通过点击反应报道了在炼钢渣作为催化剂存在下的四唑。一系列脂肪族和芳香族腈在标准条件下与叠氮化钠发生 [3 + 2] 环加成反应，得到各种 5-取代-1 H-四唑产率良好至极好。反应发生在几乎短的反应时间，不需要惰性反应条件，避免使用或形成任何潜在的有毒或爆炸性化学品。SMS催化剂通过FT-IR光谱、粉末X射线衍射、能量色散X射线映射和扫描电子显微镜以及X射线荧光技术进行了表征。此外，该程序简单、成本有效且可靠，具有在有机合成和工业要求中进一步应用的潜力。

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