反应详情

1.14 g (15.59 mmol) of diethylamine and 10 ml of water are added with stirring to 2.0 g (7.73 mmol) of 1,3-dimethyl-2-chloroimidazolidinium dimethylphosphate. The reaction mixture is stirred for 10 minutes at room temperature, and 10 ml of ethanol are subsequently added. The solution is extracted 5 times with 30 ml of dichloromethane. Water is distilled off from the aqueous phase. The residue is dried for 4 hours under a reduced pressure of 7 Pa at an oil-bath temperature of 70-80° C., giving 1.85 g of 1,3-dimethyl-2-dimethylaminoimidazolidinium dimethylphosphate, corresponding to a yield of 81%.

1. extractionThe solution is extracted 5 times with 30 ml of dichloromethane
2. distillationWater is distilled off from the aqueous phase
3. customThe residue is dried for 4 hours under a reduced pressure of 7 Pa at an oil-bath temperature of 70-80° C.