Process for the production of ionic liquids with the iodide structure of 1, w-bis- (3-methylimidazolium-1-yl) -alkane (w = 1,3,4,5,6) (Machine-translation by Google Translate, not legally binding)

摘要

Process for the manufacture of ionic liquids with the iodide structure of 1, ω-bis-(3-methylimidazolium-1-yl) -alkane (ω = 1, 3, 4, 5, 6). The present invention relates to a process for the production of dicationic ionic liquids derived from the imidazolium which comprises the following phases: (I) adding an effective amount of methylimidazole to a solution of 1, ω-diiodoalkane in acetone for synthesis, (II) reflux the mixture obtained in phase (I), for two days with a blue silica desiccant tube closed by a balloon, (III) cooling the mixture obtained in step (II) to -10ºC and separating the imidazolium salt by decanting the supernatant acetone, (IV) adding acetone for synthesis to the imidazolium salt obtained in step (III), refluxing the mixture for approximately 10 minutes, cooling the mixture to -10ºC and decanting the supernatant acetone, (V) dissolving the product obtained in step (IV) in ethanol and saturating the mixture by the addition of acetone and hexane, (VI) cool the mixture obtained in step (V) to -10º c, decant the supernatant solvent and dry the mixture for approximately two hours, obtaining the final compound. (Machine-translation by Google Translate, not legally binding)