Solvent Free One-Pot Synthesis of 1,2,4,5-Tetrasubstituted Imidazoles Catalyzed by Secondary Amine Based Ionic Liquid and Defective Keggin Heteropoly Acid
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TLDR
In this article, secondary amine based ionic liquid and defective Keggin type HPA are separately used for efficient one-pot four-component synthesis of 1,2,4,5-tetrasubstituted imidazoles assisted by microwave (MW).Abstract:
Secondary amine based ionic liquid and defective Keggin type
heteropoly acid (HPA) are separately used for efficient one-pot four-component
synthesis of 1,2,4,5-tetrasubstituted imidazoles assisted by microwave (MW).
Eco-friendly solvent free procedure, short reaction time, high yield of
products and reusability of catalysts are important features of the synthesis.
A comparative study on the efficiency of the two catalysts is reported. This
work further demonstrates the alternate use of urea, instead of often used
ammonium acetate, as source of nitrogen.read more
Citations
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Journal ArticleDOI
Catalytic Synthesis of 1,2,4,5-Tetrasubstituted 1H-Imidazole Derivatives: State of the Art
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Synthesis, photophysical and electrochemical properties of polyimides of tetraaryl imidazole
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Effect of silane-bridging on the dispersion of polyetheramine-functionalized graphene oxide in waterborne epoxy composites
TL;DR: In this article, a polyetheramine functionalization of graphene oxide was used as the molecular bridge via a two-step modification, which increased the length of the grafted molecules and changed the reaction sites from the carboxyl groups at the graphene edges/defects to the hydroxyl groups on the basal plane.
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Transition metal-free one-pot synthesis of nitrogen-containing heterocycles
TL;DR: This comprehensive review is devoted to the transition metal-free one-pot synthesis of nitrogen-containing heterocycles from the period 2010–2013.
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CAN catalyzed one-pot synthesis and docking study of some novel substituted imidazole coupled 1,2,4-triazole-5-carboxylic acids as antifungal agents
TL;DR: In this article, a facile, one-pot three component synthesis of a series of 3-[(4,5-diphenyl-2-substituted aryl/heteryl)-1H-imidazol-1-yl]-1,2,4-triazole-5-carboxylic acid derivatives was described.
References
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Book
Comprehensive Heterocyclic Chemistry II
TL;DR: In this article, the CHEC III is organized in 15 volumes and closely follows the organization used in the previous edition: Volumes 1 and 2: Cover respectively three and four-membered heterocycles, together with all fused systems containing a three- or four-measured heterocyclic ring.
Book
Ionic Liquids in Synthesis
Peter Wasserscheid,Tom Welton +1 more
TL;DR: The early years of Ionic liquid production were covered in this article, where a new generation of soluble supports for Supported Organic Synthesis (SPOS) was proposed. But this support was not applied to the task-specific Ionic liquids.
Journal ArticleDOI
Catalysis by Heteropoly Acids and Multicomponent Polyoxometalates in Liquid-Phase Reactions
Journal ArticleDOI
Asymmetric multicomponent reactions (amcrs): the new frontier
Diego J. Ramón,Miguel Yus +1 more
TL;DR: Asymmetric multicomponent reactions involve the preparation of chiral compounds by the reaction of three or more reagents added simultaneously and has some advantages over classic divergent reaction strategies, such as lower costs, time, and energy, as well as environmentally friendlier aspects.
Book ChapterDOI
Catalytic Chemistry of Heteropoly Compounds
TL;DR: The catalytic properties of heteropoly compounds have drawn wide attention, owing to the versatility of these compounds as catalysts, which has been demonstrated both by success in large-scale applications and by promising laboratory results as mentioned in this paper.