Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 65039-05-6, name is 1-Butyl-3-methylimidazolium iodide, A new synthetic method of this compound is introduced below., Safety of 1-Butyl-3-methylimidazolium iodide
(1) Take 10g of 98% purity by mass of 3-methyl-1-butyl iodide was added 25mL imidazole dissolved in distilled water, was added 50mL of 45% concentration of hydrofluoric acid, sealed and heated to 60oC with stirring;(2) reaction of starting material at least sufficient 3h, then heated to 100oC, excess hydrogen fluoride was evaporated and the product gas of hydrogen chloride gas, tail gas absorption using calcium oxide, not dehydrated to give 1-butyl-3-methylimidazolium ionic liquids fluoride ;(3) not dehydrated to 1-butyl-3-methyl-fluorinated ionic liquid was diluted with distilled water is added, not dehydrated butyl-3-methyl-fluorinated ionic liquid volume of distilled water is less than 1:50, dilution was added to the AgNO3 solution, if precipitation production, continue to add 20mL hydrofluoric acid, repeating (1) and (2) step until no precipitate was produced, purified non-dehydrated 1- butyl-3 – methyl fluoride ionic liquid;(4) The dehydrated purified non-3-methyl-1-butyl fluoride at 120oC ionic liquid was dried under high vacuum at least 48h, in addition to the depth of water, in addition to hydrogen fluoride, to give a viscous liquid, of a viscous liquid testing, viscous liquid was added to distilled water, distilled water and the volume of viscous liquid is less than 50, sealed and heated to 50oC, with hydrogen detector dilution residual amount of hydrogen fluoride, if the reading is greater than> 0.1ppm, continue at 120oC under high vacuum drying in addition to hydrogen fluoride untilInspection hydrogen fluoride concentration <0.1ppm; if detected hydrogen fluoride concentration <0.1ppm, the resulting liquid is 1-butyl-3-methyl fluoride ionic liquid, weighing 5.69g.
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; Beijing University; Li, Zhongning; Zhong, Xiongwei; Xiong, Ting; Hu, Xianwei; Xu, Junli; Wang, Zhaowen; Gao, Bingliang; Yu, Jiangyu; (27 pag.)CN103992275; (2016); B;,
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem