Amadine Othmane, Essamlali Younes, Amedlous Abdallah, Zahouily Mohamed
VARENA Center, MAScIR Foundation Rabat Design, Rue Mohamed El Jazouli, Madinat El Irfane 10100-Rabat Morocco
Laboratoire de Matériaux, Catalyse et Valorisation des Ressources Naturelles, URAC 24, FST, Université Hassan II-Casablanca Morocco.
RSC Adv. 2019 Nov 11;9(62):36471-36478. doi: 10.1039/c9ra06991g. eCollection 2019 Nov 4.
-Arylation of imidazole was carried out with various arylboronic acids on iron oxide encapsulated by copper-apatite (FeO@Cu-apatite), producing excellent yields. Firstly, the iron nanoparticles were prepared using a solvothermal method, and then they were encapsulated by copper-apatite to obtain magnetic FeO@Cu-apatite nanocatalysts. Several physico-chemical analysis techniques were used to characterize the prepared nanostructured FeO@Cu-apatite catalyst. The prepared FeO@Cu-apatite was used as a nanocatalyst for -arylation of imidazole with a series of arylboronic acids with different substituents to reaffirm the effectiveness of this magnetic nanocatalyst. The FeO@Cu-apatite nanocatalyst can also be easily separated from the reaction mixture using an external magnet. More importantly, the as-prepared FeO@Cu-apatite exhibited good reusability and stability properties in successive cycles. However, there was a notable loss of its catalytic activity after multiple cycles.
在铜磷灰石包覆的氧化铁（FeO@Cu-磷灰石）上，用各种芳基硼酸对咪唑进行芳基化反应，产率优异。首先，采用溶剂热法制备铁纳米颗粒，然后用铜磷灰石对其进行包覆，得到磁性FeO@Cu-磷灰石纳米催化剂。使用了几种物理化学分析技术来表征所制备的纳米结构FeO@Cu-磷灰石催化剂。将制备的FeO@Cu-磷灰石用作纳米催化剂，用于咪唑与一系列具有不同取代基的芳基硼酸的芳基化反应，以再次确认这种磁性纳米催化剂的有效性。FeO@Cu-磷灰石纳米催化剂也可以使用外部磁铁轻松地从反应混合物中分离出来。更重要的是，所制备的FeO@Cu-磷灰石在连续循环中表现出良好的可重复使用性和稳定性。然而，多次循环后其催化活性有明显损失。
