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. 79917-88-7, name is 1,3-Dimethyl-1H-imidazol-3-ium chloride, A new synthetic method of this compound is introduced below., Quality Control of 1,3-Dimethyl-1H-imidazol-3-ium chloride
(1) Take 10g mass purity1,3-dimethyl-imidazolium chloride 25mL of distilled water was added to dissolve the solid, was added 55mL of 30percent concentration of hydrofluoric acid, stirred and heated to 50oC in the original closed;(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 1,3-dimethyl-imidazol-fluorinated ionic liquids;(3) not to dehydrated 1,3-dimethylimidazolidinone fluorinated ionic liquid was diluted with distilled water was added, the volume is not dehydrated 1,3-dimethyl-fluorinated ionic liquid with distilled water, is less than 1:50, was added to the AgNO3 solution was diluted, if precipitation production, continue to add 20mL hydrofluoric acid, repeating (1) and (2) step until no precipitate was produced, purified non-dehydrated 1,3-dimethylimidazolidinone fluoride ionic liquids;(4) dewatering the non-purified non-dehydrated 1,3-dimethylimidazolidinone 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 viscosity liquid detection, viscous liquid was added to distilled water, distilled water with viscous liquid volume ratio of less than 1:50, sealed and heated to 30oC, with hydrogen detector dilution residual amount of hydrogen fluoride, if the reading is greater than> 0.1ppm, continue to 120oC and dried under high vacuum in addition to fluorideHydrogen until the concentration of hydrogen fluoride test <0.1ppm; detecting if the hydrogen fluoride concentration <0.1ppm, the resultant liquid is 1,3-dimethylimidazolidinone fluorinated ionic liquids, weighing 8.52g.
The synthetic route of 79917-88-7 has been constantly updated, and we look forward to future research findings.
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