Abstract By microwave irradiation, the intermediates of imidazolium ionic liquids: 1-Butyl-3- methylimidazolium bromide ([bmim] Br), 1-propyl-3-methylimidazolium bromide ([pmim] Br), 1-hexyl-3-methylimidazolium bromide ([c6mim] Br) were synthesized, respectively from 1- methylimidazole and organic bromide (1-bromobutane, 1-bromopropane, 1-bromohexane). The optimal technological conditions were obtained by the crossed experiment, ie, 1- ...