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ChemicalBook CAS DataBase List 1-ETHYL-3-METHYLIMIDAZOLIUM ETHYL SULFATE

1-ETHYL-3-METHYLIMIDAZOLIUM ETHYL SULFATE synthesis

1synthesis methods
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Yield:342573-75-5 98.3%

Reaction Conditions:

in toluene at 0 - 40; for 1 h;Green chemistry;

Steps:

1 Example 1 Room temperature ionic liquid 1-methyl-3-ethylimidazolium sulfate monoethyl ester [Emim][OSO2OE] synthesis
100 mmol ofN-methylimidazole wasdispersed in 30 mL of toluene, and stirred at 0 ° C with stirring plus other 100 mmol of diethyl sulfate, the control periodthe temperature of the reaction system during the addition of less than 40 , after the completion of the reaction system was further added dropwise at room temperature the reaction, the reaction after 1 hour junctionbeam to obtain a two phase mixture, the upper layer was separated The toluene phase, the lower ionic liquid phase was washed three times with ethyl acetate, and thenrotary-steamed on a rotary evaporator and dried in vacuo to give a colorless viscous ionic liquid, 1-methyl-3-ethylimidazolium sulfate monoethyl ester [ Emim][OSO2OE], yield 98.3%.

References:

Zaozhuang College;Zhou Fengyan;Zhang Wenzhi;Kong Xiaoyu;Yuan Yaru;Li Suwan CN107880085, 2018, A Location in patent:Paragraph 0023

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