DABCO as a mild and efficient catalytic system for the synthesis of highly substituted imidazoles via multi-component condensation strategy
作者:S. Narayana Murthy、B. Madhav、Y.V.D. Nageswar
DOI:10.1016/j.tetlet.2010.07.128
日期:2010.10
A simple and efficient protocol for the synthesis of highlysubstituted imidazoles is developed through the condensation of 1,2-dicarbonyl compound, aldehyde, and ammonium acetate or amine via multi-component condensation strategy. The present method gives good to excellent yields of substituted imidazoles.
Synthesis, Anti-microbial, Antifungal and In Silico Assessment of Some 2,4,5-Trisubstituted Imidazole Analogues
作者:Elham Zarenezhad、Somayeh Behrouz、Marzieh Behrouz、Mohammad Navid Soltani Rad
DOI:10.1016/j.molstruc.2023.136839
日期:2024.1
In this current research, we have explained design, synthesis and in silico study of some 2,4,5-trisubstituted imidazole derivatives in the presence of [SiO2-CuL] as a heterogeneous catalyst. The chemical structures of title compounds were characterized using different spectroscopic techniques. Then, the in vitro anti-microbial activity of the synthesized compounds 4a-v were investigated against two
The new bioglycerol-based carbon catalyst acts as an efficient, readily available, and reusable catalyst for the synthesis of 2,4,5-trisubstituted imidazoles/1,2,4,5-tetrasubstituted imidazoles, when aromatic aldehyde, ammonium acetate/amine, and 1,2-diketone are reacted in acetonitrile. (C) 2011 Elsevier Ltd. All rights reserved.
Co(II) anchored glutaraldehyde crosslinked magnetic chitosan nanoparticles (MCS) for synthesis of 2,4,5-trisubstituted and 1,2,4,5-tetrasubstituted imidazoles
作者:Harminder Singh、Jaspreet Kaur Rajput
DOI:10.1002/aoc.3989
日期:2018.1
A simple, highly efficient and green synthesis of 2,4,5‐trisubsituted and 1,2,4,5‐tetrasubstituted imidazoles was developed using a novel MCS‐GT@Co(II) magnetically recoverable and recyclable catalyst under refluxing conditions with ethanol as a solvent. The catalyst was prepared by immobilization of chitosan onto Fe3O4 using glutaraldehyde as crosslinker followed by Co(II) ion immobilization via cobalt
使用新型MCS-GT @ Co(II)磁性可回收和可循环利用的催化剂,在乙醇回流条件下,开发了一种简单,高效且绿色的2,4,5-三取代和1,2,4,5-四取代的咪唑合成方法作为溶剂。通过使用戊二醛作为交联剂将壳聚糖固定在Fe 3 O 4上,然后通过乙酸钴固定Co(II)离子来制备催化剂。使用多种技术表征催化剂。对于有机产物的测定,1 H NMR,13使用13 C NMR和傅立叶变换红外光谱。还尝试了用催化剂的各个组分进行反应,但是在制备的催化剂中组分的协同作用显示出最高的产率和最短的反应时间。