Boric Acid → HCID 86613215, compound

HRID 889665Notes

Reaction equation

HRID 889665 reaction equation
[B:1]([OH:4])([OH:3])[OH:2].S([O-])(O)(=O)=O.[CH3:10][N+:11]1[CH:15]=[CH:14][N:13]([CH2:16][CH3:17])[CH:12]=1>O>[B:1]([O-:4])([OH:3])[OH:2].[CH3:10][N+:11]1[CH:15]=[CH:14][N:13]([CH2:16][CH3:17])[CH:12]=1

Participants

4

Reactant 2

HCID 7628Boric AcidHCID 162172151-Ethyl-3-methylimidazolium hydrogen sulfate

Product 1

HCID 86613215HCID 86613215, compoundYield 144%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Procedure

631 g (2.0 mol) of Ba(OH)2 (octahydrate) and 123.6 g (2.0 mol) of boric acid are suspended in 500 ml of water at 60° C. 208 g (1.0 mol) of 1-methyl-3-ethylimidazolium hydrogensulfate are added dropwise to this mixture over a period of 60 minutes. After addition of a further 500 ml of water, the precipitated BaSO4 is filtered off using Celite as filter aid and washed with water. After addition of n-butanol, the water is removed on a rotary evaporator and the residue is dried under reduced pressure to give 247.2 g (1.44 mol) of 1-methyl-3-ethylimidazolium dihydrogenborate (yield: 72%, melting point: 40° C.).

Workup

  1. filtrationthe precipitated BaSO4 is filtered off
  2. filtrationas filter aid
  3. washwashed with water
  4. additionAfter addition of n-butanol
  5. customthe water is removed on a rotary evaporator
  6. customthe residue is dried under reduced pressure

Sources & evidence

ORD record
ord-41e43e9d6cbc41708fd5b81dcddf7c2f
Source dataset
uspto-grants-2012_08
Patent number
US08252943B2

Reaction notes

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