Sodium Tetrafluoroborate → 1-Butyl-3-methylimidazolium tetrafluoroborate

HRID 2425733Notes

Reaction equation

HRID 2425733 reaction equation
[Cl-].[CH2:2]([N+:6]1[CH:10]=[CH:9][N:8]([CH3:11])[CH:7]=1)[CH2:3][CH2:4][CH3:5].[F:12][B-:13]([F:16])([F:15])[F:14].[Na+]>C(Cl)Cl>[F:12][B-:13]([F:16])([F:15])[F:14].[CH2:2]([N+:6]1[CH:10]=[CH:9][N:8]([CH3:11])[CH:7]=1)[CH2:3][CH2:4][CH3:5]

Participants

4

Reactant 2

HCID 4343483Sodium TetrafluoroborateHCID 178448538HCID 178448538, compound

Product 1

HCID 27341781-Butyl-3-methylimidazolium tetrafluoroborate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

Methylimidazole and excessive amount of chloro-n-butane (molar ratio: 1/1.05) were reacted at 70° C. with stirring for 48 hours. Excessive of reactants were removed by rotary evaporation, thereby 1-butyl-3-methylimidazolium chloride was obtained. The obtained 1-butyl-3-methylimidazolium chloride was further added into an aqueous solution with excessive amount of sodium tetrafluoroborate (molar ratio: 1/1.1) and stirred for 24 hours. Then, adequate amount of methylene dichloride was added to extract the product. A mixture of the product and the methylene dichloride was washed with water until no chlorine ion was detected by a silver nitrate solution (0.1 mol/L). A product of 1-butyl-3-methylimidazolium tetrafluoroborate was obtained after removing methylene dichloride in the product by rotary evaporation and drying.

Workup

  1. extractionto extract the product
  2. additionA mixture of the product
  3. washthe methylene dichloride was washed with water until no chlorine ion

Sources & evidence

ORD record
ord-31953c66ed1442dc94a802bcf92f511d
Source dataset
uspto-grants-2011_06
Patent number
US07964756B2

Reaction notes

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