Synthesis and Structure of 1-Ethyl-2,4,5-triphenyl-1H-imidazole (Ethyl-Lophine)

Abstract

Ethyl-Lophine, 1-ethyl-2,4,5-triphenyl-1H-imidazole, C 23 H 20 N 2 , was synthesized as a precursor for large organic cations in ionic liquids using an improved microwave-assisted method. The title compound and a precursor compound were characterized by NMR, IR, and DSC thermal measurements, as well as elemental analyses. The crystal structure of ethyl-lophine was determined by singlecrystal X-ray structure analysis (triclinic, P1, a = 10.1137(3), b = 12.4935(4), c = 14.6351(4)Å, α = 98.182(2) • , β = 90.694(2) • , γ = 102.666(2) • , Z = 4, wR2 = 0.1030 for 611 refined parameters).