Nano-magnetite-supported sulfated polyethylene glycol (Fe 3 O 4 @PEG-SO 3 H) was prepared, characterized and utilized as a magnetically recoverable heterogeneous catalyst for the one-pot, three-component reaction of 2-aminobenzothiazole, aldehydes and 2-naphthol/isatoic anhydride resulting in efficient formation of 1-(benzothiazolylamino)arylmethyl-2-naphthol or dihydroquinazolinones derivatives. The significant features of this method include green conditions, operational simplicity, minimizing production of chemical waste, shorter reaction times and good to high yields. In addition, the nanocatalyst can easily be separated from the reaction mixture by application of a magnetic field and reused without significant deterioration in its catalytic activity.

中文翻译：

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使用磁性可回收核壳纳米复合材料作为催化剂一锅法合成 1-(苯并噻唑基氨基)芳基甲基-2-萘酚和 3-苯并噻唑基 2,3-二氢喹唑啉酮

制备纳米磁铁负载硫酸化聚乙二醇（Fe 3 O 4 @PEG-SO 3 H），并将其用作磁性可回收多相催化剂，用于 2-氨基苯并噻唑、醛类和 2 的一锅三组分反应。 -naphthol/isatoic anhydride 导致有效形成 1-(benzothiazolylamino)arylmethyl-2-naphthol 或 dihydroquinazolinones 衍生物。这种方法的显着特点包括绿色条件、操作简单、化学废物的产生最小化、反应时间更短和产率高。此外，纳米催化剂可以很容易地通过施加磁场从反应混合物中分离出来并重新使用，而不会显着降低其催化活性。