Three selective ionic liquids and synthesizing method thereof

• Main Authors: REN HAIRONG, WANG XIAOYI, LIU CHAOQING
• Format: Patent
• Language: Chinese; English
• Published: 07.08.2013
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; CHEMISTRY; HETEROCYCLIC COMPOUNDS; METALLURGY; ORGANIC CHEMISTRY

The invention relates to selective ionic liquids and a synthesizing method. The invention belongs to the technical field of ionic liquid. The ionic liquids are 1-ethyl-3-methylimidazole bistrifluoromethyl sulfonylimide salt, 1-n-propyl acetate-3-methylimidazole bistrifluoromethyl sulfonylimide salt, and 1-p-methyl ethyl benzoate-3-methylimidazole bistrifluoromethyl sulfonylimide salt. The preparation method comprises the steps that: under the protection of N2, N-methylimidazole and halogenated hydrocarbon with a molar ratio of 1:1-1.5 are added into a reaction container, and acetonitrile is added; refluxing is carried out for 12h under a temperature of 55 DEG C; separation is carried out, such that a halogen ionic liquid crude product is obtained; the product is washed by using ethyl acetate and is dried, such that purified halogen ionic liquid is obtained; a water solution of bistrifluoromethyl sulfonylimide lithium salt is added into the ionic liquid, and stirring is carried out under room temperature; lowe