The solubility of imidazoles in ethers is lower than that in alcohols and decreases with increasing chain length of the ethers . 1739-84-0, formula is C5H8N2, Name is 1,2-Dimethyl-1H-imidazole. In contrast, the solubility of benzimidazoles in alcohols (C3–C6) is higher than in water and generally decreases with an increase of the alkyl chain length of the alcohols. Category: imidazoles-derivatives.
Haddad, Boumediene;Kachroudi, Achraf;Turky, Gamal;Belarbi, El Habib;Lamouri, Abdelkader;Villemin, Didier;Rahmouni, Mustapha;Sylvestre, Alain research published 《 The interplay between molecular structure and dielectric propertiesin ionic liquids: A comparative study》, the research content is summarized as follows. In this work, C2-Methylated [C3DMIM+][I–] vs. C2-Protonated [C3MIM+][I–] Imidazolium-Based Ionic Liquids containing iodide anion, have been synthesized and characterized using 1H and 13C NMR spectroscopy methods. In order to investigate the methylation effect on thermal properties, we rely to three addnl. thermal anal. techniques. The thermal behavior confirmed that the methylated [C3DMIM+][I–] IL is more stable than the protonated one [C3MIM+][I–]. The conductivity and dielec. relaxation properties of both ILs have been investigated in the frequency range [10-2, 107 Hz] and the temperature ranging between -30°C and 60°C. Dielec. permittivity studies show that the substitution of the hydrogen atom by a Me group has a significant impact in both the real ε’ and imaginary ε” parts. In addition, the anal. of the observed relaxation times for the protonated IL [C3MIM+][I–] showed Arrhenius-type temperature dependence for the temperatures ranging between 20°C and 60°C – and VFT temperature dependence for the temperatures ranging between -20°C and 20°C-, while, the methylated IL [C3DMIM +][I–] showed Vogel-Fulcher-Tamman-type temperature dependence in the entire investigated temperature range – 30°C to 60°C. The representation of σ” (ν, T) shows the buildup of the electrochem. double layer and interfacial effect. However the real part of complex conductivity follows the empirical Jonscher equation. The determined dc-conductivity of both investigated Ionic liquids present a new behavior regarding the thermal activation an anomalous thermal activation behavior. It follows an Arrhenius relation at lower temperatures and then reach a steady state values at higher temperatures
Category: imidazoles-derivatives, 1,2-Dimethylimidazole is used in the synthesis of 1,2-dimethyl-3-n-butylimidazoliumchloride and 1,2-dimethyl-3-n-propylimidazolium chloride. It also can be used in the synthesis of 1-(2-methoxyethyl)-2,3-dimethylimidazolium chloride and hexafluorophosphate salts.
1,2-Dimethylimidazole is a heterocyclic compound that contains nitrogen and carbon. It can be produced by the reaction between glyoxal and fatty acid in the presence of a base. 1,2-Dimethylimidazole has been shown to have biological properties such as an antioxidant effect. It is also used as a chemical intermediate for production of other chemicals such as 2-methylimidazole and 3-methylimidazole. 1,2-Dimethylimidazole has been shown to react with metal carbonyls to produce methylimines, which are useful intermediates in organic synthesis. The reaction mechanism involves hydrogen bonding and steric interactions between the imidazole ring and the metal carbonyl reactant., 1739-84-0.
Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem