Реакция #2444878

Уравнение реакции

lithium bis(trifluoromethanesulfonyl)amide

1-ethyl-3-methylimidazolium chloride

charcoal

→

1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide

Выход 87.0%

Растворители

water

water

Условия реакции

Обработка

1. 1
   ТемператураThe solution was cooled to room temperature
2. 2
   Фильтрацияfiltered
3. 3
   workup.ADDITIONTo the yellow filtrate was added
4. 4
   Температураthe solution was then heated for a further 24 hours at 65° C
5. 5
   Температураto cool to room temperature
6. 6
   Фильтрацияfiltered
7. 7
   Другоеto give a colorless solution
8. 8
   Другоеhad formed
9. 9
   ДругоеThe bottom layer was separated
10. 10
    Промывкаwashed three times with deionized water (100 mL)
11. 11
    ТемператураThe layer was then heated at 65° C. under vacuum for 48 hrs
12. 12
    Фильтрацияfiltered through activated alumina

Методика

Yellow 1-ethyl-3-methylimidazolium chloride (Aldrich) (50 g) was dissolved in deionized water (250 mL). Decolorizing charcoal (3 g) was added to the solution and the resulting mixture heated at 65° C. for 24 hours. The solution was cooled to room temperature and filtered. To the yellow filtrate was added decolorizing charcoal (3 g) and the solution was then heated for a further 24 hours at 65° C. The solution was allowed to cool to room temperature and then filtered to give a colorless solution. This solution was poured into a solution of lithium bis(trifluoromethanesulfonyl)amide (115 g) in 200 mL of deionized water. The solution was then stirred at room temperature for 3 hrs after which two layers had formed. The bottom layer was separated and washed three times with deionized water (100 mL). The layer was then heated at 65° C. under vacuum for 48 hrs and then filtered through activated alumina to give 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide as a colorless clean dry material in 87% yield.

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