1-Methylimidazole → 1-Propenyl-3-methylimidazolium Bromide
Reaction equation
[Br:1][CH2:2][CH2:3][CH3:4].[CH3:5][N:6]1[CH:10]=[CH:9][N:8]=[CH:7]1>>[Br-:1].[CH3:5][N+:6]1[CH:10]=[CH:9][N:8]([CH2:2][CH2:3][CH3:4])[CH:7]=1Participants
3
Conditions
- Temperature
- 70 °C
Procedure
450 g of 1-bromopropane (3.66 mol) are loaded into a 1 l glass reactor. The mixture is heated to 70° C. and then 200 g of 1-methylimidazole (2.44 mol) are poured in dropwise, with stirring. The mixture is left to react for 1 h at 70° C. After returning to room temperature, the mixture is separated by decantation. The bottom ionic liquid phase is recovered, washed with toluene (1×100 ml), and then evaporated under vacuum. 475 g of 1-methyl-3-propylimidazolium bromide are obtained in the form of a yellow liquid. The product is used as a base without further purification.
Workup
- waitThe mixture is left
- customto react for 1 h at 70° C
- customAfter returning to room temperature
- customthe mixture is separated by decantation
- customThe bottom ionic liquid phase is recovered
- washwashed with toluene (1×100 ml)
- customevaporated under vacuum
Sources & evidence
- ORD record
- ord-422262e1a46e466d8c83a2b55dd26e5f
- Source dataset
- uspto-grants-2004_03
- Patent number
- US06700007B2
Reaction notes
Loading…