Tetrafluoroboric acid → HCID 178433651, compound

HRID 1032050Notes

Reaction equation

HRID 1032050 reaction equation
[F:1][B-:2]([F:5])([F:4])[F:3].C(=N[N+:14]1[CH:18]=[CH:17][N:16]([CH3:19])[C:15]=1[CH3:20])C1C=CC=CC=1.F[B-](F)(F)F.[H+]>O>[F:1][B-:2]([F:5])([F:4])[F:3].[CH3:20][C:15]1[N:16]([CH3:19])[CH:17]=[CH:18][NH+:14]=1

Participants

4

Reactant 2

HCID 28118Tetrafluoroboric acidHCID 178432781HCID 178432781, compound

Product 1

HCID 178433651HCID 178433651, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

0.86 g of 1-benzylideneamino-2,3-dimethylimidazolium tetrafluoroborate is suspended in 30 ml of water. The suspension is treated with 1 ml of 50 percent tetrafluoroboric acid and steam-distilled until benzaldehyde no longer passes over. The colorless acidic solution is then treated with 0.45 g of p-(dimethylamino)benzaldehyde and stirred at room temperature for 3 hours. The resulting orange-yellow precipitate is removed by filtration under suction, washed three times with water and three times with diethyl ether and recrystallized from methanol/ethanol. There is obtained 1-[[p-(dimethylamino)benzylidene[amino[-2,3-dimethylimidazolium tetrafluoroborate in the form of yellow needles with a melting point of 248°-251°.

Workup

  1. distillationsteam-distilled until benzaldehyde
  2. additionThe colorless acidic solution is then treated with 0.45 g of p-(dimethylamino)benzaldehyde
  3. customThe resulting orange-yellow precipitate is removed by filtration under suction
  4. washwashed three times with water and three times with diethyl ether
  5. customrecrystallized from methanol/ethanol

Sources & evidence

ORD record
ord-2d309a2a5fe449678d93d5ddeac5de0c
Source dataset
uspto-grants-1990_09
Patent number
US04956470

Reaction notes

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