A proficient technique utilizing core–shell structured Fe₃O₄@MgO nanocatalyst for the synthesis of β-naphthol condensed 1,3-oxazinone derivatives through a one-pot condensation reaction of aldehyde, urea, and β-naphthol in the presence of K₂CO₃ and Fe₃O₄@MgO nanoparticles in PEG-400 is presented. This technique provides numerous benefits, such as high yields, unaltered reactions, quick responses, reusability of the catalyst, and an uncomplicated workup technique. PEG-400 was the most effective solvent among the variety of solvents investigated for this system. In addition, polyethylene glycol (PEG) can enhance the stability of nanoparticles against oxidation, improving catalyst efficiency. This results in a more ecologically sound and sustainable protocol.

Graphical abstract

中文翻译：

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使用磁性可分离磁铁矿支撑的MgO核壳纳米催化剂，PEG介导的1,2-二氢-1-芳基萘并[1,2-e][1,3]恶嗪-3-酮的简易一锅法合成：一种绿色方法

一种利用核壳结构Fe ₃ O ₄ @MgO纳米催化剂通过醛、尿素和β-萘酚在K存在下的一锅缩合反应合成β-萘酚缩合1,3-恶嗪酮衍生物的熟练技术提出了 PEG-400 中的₂ CO ₃和 Fe ₃ O ₄ @MgO 纳米颗粒。该技术具有许多优点，例如高产率、不改变反应、快速响应、催化剂的可重复使用性以及简单的后处理技术。 PEG-400 是该系统研究的各种溶剂中最有效的溶剂。此外，聚乙二醇（PEG）可以增强纳米粒子的抗氧化稳定性，提高催化剂效率。这导致了一个更加生态友好和可持续的协议。

图形概要