Co()-Cu() mixed-oxide catalysts for single-step synthesis of 2,4,5-triaryl-1-imidazole derivatives under microwave irradiation

• Published in: Dalton transactions : an international journal of inorganic chemistry 2024-09, Vol.53 (36), p.15284-15296
• Main Authors: Jopale, Manohar K, Zheng, Zhiyong, Choi, Soowon, Shelke, Bharat N, Mharsale, Nilesh, Patil, Shripad, Chine, Sonali S, Gade, Vilas, Kahane, Shital V, Bulakhe, Ravindra N, Kim, Ji Man, Kategaonkar, Amol H
• Format: Article
• ISSN: 1477-9226; 1477-9234
• DOI: 10.1039/d4dt01631a

In this study, a catalyst composite of Co-Cu was prepared from chloride-containing precursor of Co( ii ) and Cu( ii ) metals using the milky latex of the Euphorbia neriifolia plant following green principles of synthesis. The catalyst composite was characterized using XRD, EDAX, SEM, HR-TEM, FTIR, XPS and TOF-MS. The crystallinity of the mixed-oxide composite with a distorted octahedral nature was confirmed from analysis. Chemical charge analysis of the Co-Cu mixed phase based on XPS revealed Co 2+ and Cu 2+ oxidation states. This material was used for synthesizing 2,4,5-triaryl-1 H -imidazole (TIMDZOL) derivatives. Analysis of reaction conditions revealed that EtOH : PEG at 8 : 2 ratio under microwave conditions showed better yields with less time and better reusability of the Co-Cu catalyst. In this study, a catalyst composite of Co-Cu was prepared from chloride-containing precursors of Co( ii ) and Cu( ii ) metals using the milky latex of the Euphorbia neriifolia plant following green principles of synthesis.