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(organic chemistry)
C3H4N2 One of a group of organic heterocyclic compounds containing a five-membered diunsaturated ring with two nonadjacent nitrogen atoms as part of the ring; the particular compound imidazole is a member of the group.



(glyoxaline, 1,3-diazole) a heterocyclic base. Colorless crystals; boiling point, 256°C. Imidazole is readily soluble i n water and alcohol and moderately soluble in ether. It is aromatic, that is, readily undergoes halogenation, nitration, and sulfonation. The hydrogen of the NH group can be replaced by alkyl by the action of, for example, dimethylsulfate. Imidazole is prepared by reacting glyoxalwith ammonia and formaldehyde. Its derivatives (histamin, histidine, carnosine, pilocarpine) are widely distributed in the animal and plant worlds and have important biological significance. [10–416-6 ]

References in periodicals archive ?
1] for IL-f-MWCNTs whereas the backbone attributed to defective graphite-like structure disappears due to the attachment of surface-active imidazolium IL functional groups.
Zhang, "Ultrafast Killing and Self-Gelling Antimicrobial Imidazolium Oligomers," Small, 12 (2016) 1928.
Imidazolium chloride immobilized SBA-15 as a heterogenized organocatalyst for solvent free Knoevenagel condensation using microwave.
Konradi, Rupert; Siemer, Michael; Sobotka, Bettina; Koltzenburg, Sebastian; Haberecht, Monika; Compositions containing polymeric, ionic compounds comprising imidazolium groups, US Patent Application 20120244095, September 27, 2012, assigned to BASF SE.
The concept of hybrids protonation and complexation of nitrogen based organic compounds have been utilized in our previous studies to produce ILs named protic eutectic ILs (Shamsuri & Dzulkefly 2010), it similar protic and eutectic ILs have been made using a wide variety of quaternary ammonium salts, most notably imidazolium and choline cations.
Khanna, "Volume, Surface and UNIQUAC Interaction Parameters for Imidazolium Based Ionic Liquids via Polarizable Continuum Model," Fluid Phase Equilib.
In [8] it was demonstrated that imidazolium based ILs do not change the direction of the electroosmotic flow (EOF) in the capillary in various organic solvents.
With this project the synthesis of a photopolymerizable ionic liquid monomer was targeted and it was hypothesized that polymerization would lead to a nanostructured poly(ionic liquid) incorporating both an electron accepting imidazolium group and an electron donating thiophene group.
He was working with imidazolium salts when he read that the salts are commonly used in ionic liquids.
Vibrational Spectroscopy for Studying Hydrogen Bonding in Imidazolium Ionic Liquids and their Mixtures with Co-Solvents (Johannes Kiefer).
The choice of heating temperature depends on the decomposition temperature of 1-methyl-3-(triethoxylylpropyl) imidazolium chloride and the temperature of oxide-matrix formation.