Green Synthesis of 1,2,4,5-Tetrasubstituted and 2,4,5-Trisubstituted Imidazole Derivatives Involving One-pot Multicomponent Reaction
作者:Ravi Bansal、Pradeep K. Soni、Anand K. Halve
DOI:10.1002/jhet.3160
日期:2018.6
Sodium lauryl sulfate has been found convenient, versatile, and eco‐friendly catalyst for the synthesis of 1,2,4,5‐tetrasubstituted and 2,4,5‐trisubstituted imidazole derivatives by one‐pot multicomponent reactions at 80°C using water as solvent. This protocol afforded advantages, that is, the metal‐free reaction, purification of products by non‐chromatographic method, and excellent yields.
Expeditious and Highly Efficient One-Pot Synthesis of Functionalized Imidazoles Catalyzed by Sulfated Polyborate
作者:Krishna Indalkar、Sanjay S. Malge、Anil S. Mali、Ganesh U. Chaturbhuj
DOI:10.1080/00304948.2021.1920304
日期:2021.7.4
(2021). Expeditious and Highly Efficient One-PotSynthesis of Functionalized Imidazoles Catalyzed by Sulfated Polyborate. Organic Preparations and Procedures International: Vol. 53, No. 4, pp. 387-396.
Magnetic core–shell titanium dioxide nanoparticles (Fe3O4@SiO2@TiO2) were applied for the efficient preparation of 1,2,4,5‐tetrasubstituted imidazole derivatives by the one‐pot multi‐component condensation of benzil with aldehydes, primary amines and ammonium acetate under solvent‐free conditions. The catalyst was synthesized and studied using several techniques including X‐ray diffraction, transmission
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.
A new more atom-efficient multi-component approach for the synthesis of tetrasubstituted imidazoles via the one-pot condensation of nitriles, primary amines and benzoin has been described. Using this method, a wide...