Lithium bis((trifluoromethyl)sulfonyl)azanide → 3-Ethyl-2-methylbenzothiazolium bis(trifluoromethanesulfonyl)imide

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Reaction Steps

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%.

Provenance & Evidence