Garazhian Zohreh, Rezaeifard Abdolreza, Jafarpour Maasoumeh
Catalysis Research Laboratory, Department of Chemistry, Faculty of Science, University of Birjand Birjand Iran 97179-414
RSC Adv. 2019 Oct 29;9(60):34854-34861. doi: 10.1039/c9ra06581d. eCollection 2019 Oct 28.
In this study, the catalytic efficiency of amorphous {MoFe} nanocapsules as a safe Keplerate polyoxometalate in organic synthesis was exploited. The easy-made solid catalyst exhibited high efficiency using a very low dosage (0.02-0.05 mol%) in the catalyzed condensation of various aromatic 1,2-diamines and aldehydes for the aerobic synthesis of benzimidazoles with very small -factor values (0.11-0.33). The superior catalytic activity of amorphous nanoclusters compared to that of its crystalline counterpart was demonstrated. The high activity and recyclability of heterogeneous catalysts in a green reaction media under oxygen atmosphere, make this environmentally benign organic process appropriate for our applied goals.
在本研究中，开发了非晶态{MoFe}纳米胶囊作为一种安全的开普勒型多金属氧酸盐在有机合成中的催化效率。这种易于制备的固体催化剂在各种芳香族1,2 - 二胺与醛的催化缩合反应中，以非常低的用量（0.02 - 0.05 mol%）展现出高效率，用于有氧合成苯并咪唑，其因子值非常小（0.11 - 0.33）。与晶态对应物相比，非晶态纳米团簇具有更高的催化活性。在氧气气氛下的绿色反应介质中，多相催化剂的高活性和可循环性使得这种环境友好的有机过程适合我们的应用目标。
