Methane → HCID 178462731, compound

Temperature

65 °C

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.

1. temperatureThe solution was cooled to room temperature
2. filtrationfiltered
3. additionTo the yellow filtrate was added
4. temperaturethe solution was then heated for a further 24 hours at 65° C
5. temperatureto cool to room temperature
6. filtrationfiltered
7. customto give a colorless solution
8. customhad formed
9. customThe bottom layer was separated
10. washwashed three times with deionized water (100 mL)
11. temperatureThe layer was then heated at 65° C. under vacuum for 48 hrs
12. filtrationfiltered through activated alumina

ORD record

ord-d791c06bcbb740e2be499f2c45814870

Source dataset

uspto-grants-2010_07

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07763186B2