PROCEDURE FOR THE MANUFACTURE OF IONIC LIQUIDS WITH THE BROMIDE STRUCTURE OF 1, OMEGA-BIS- (3-METHYLIMIDAZOLIUM-1-YL) -ALKANE (OMEGA = 1,2,3,4,5,6) (MACHINE-TRANSLATION BY GOOGLE TRANSLATE, NOT LEGALLY BINDING)

Process for the production of ionic liquids with the bromide structure of 1,w-bis- (3-methylimidazolium-1-yl) -alkane (w = 1, 2, 3, 4, 5, 6). The present invention relates to a process for the production of dicationic ionic liquids derived from imidazolium which comprises the phases of: (I) adding an effective amount of methylimidazole to a solution of 1, ?-dibromoalkane in acetone for synthesis, (II) refluxing the mixture obtained in step (I), for four days for ? = 1, 2 and for two days for ? = 3, 4, 5 and 6, with closed blue silica desiccant tube, (III) cooling the mixture obtained in step (II) to -10 degrees C 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 about 10 minutes, cooling the mixture to -10 degrees C 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 N-hexane, (VI) cooling the mixture obtained in step (V) to -10 degrees C, decanting the acetone supernatant and drying the mixture for about two hours, obtaining the final compound. (Machine-translation by Google Translate, not legally binding)