反应详情

2.22 g (7.73 mmol) of lithium bis(trifluoromethanesulfonyl)imide, Li[(CF3SO2)2N], in 5 ml of water are added dropwise with stirring to a solution of 2.00 g (7.75 mmol) of 3-ethyl-2-methylbenzothiazolium bromide in 50 ml of water. The lower liquid phase is extracted a number of times with 50 ml of dichloromethane, and the combined organic phases are dried using Mg2SO4. The solvent is subsequently removed by distillation, and the residue is dried under a reduced pressure of 1.3 Pa at 60° C., giving 3.14 g of 3-ethyl-2-methylbenzothiazolium bis(trifluoromethanesulfonyl)imide, corresponding to a yield of 88.7%.

1. extractionThe lower liquid phase is extracted a number of times with 50 ml of dichloromethane
2. customthe combined organic phases are dried
3. customThe solvent is subsequently removed by distillation
4. customthe residue is dried under a reduced pressure of 1.3 Pa at 60° C.