反应详情

5.0 g of trimethoxysilylpropyldimethylamine and 24 g of ethanol were charged into a 100 mL flask to be dissolved. While stirring the resultant mixed solution with a magnetic stirrer, to the mixed solution, a solution in which 1.5 g of acetic acid was dissolved in 24 g of ethanol was gradually added at room temperature in a nitrogen atmosphere. The reaction mixture was stirred for half a day and therefrom, ethanol was distilled off under reduced pressure. The resultant concentrate was dropped into 100 mL of diethyl ether and therefrom, trimethoxysilylpropyldimethylamine and acetic acid as by-products were removed. This purification was repeated three times and then remaining diethyl ether was distilled off under reduced pressure, followed by dissolving the resultant concentrate in ethanol to obtain a 13.1% ethanol solution of trimethoxysilylpropyldimethylammonium acetate.

1. dissolutionto be dissolved
2. additionmixed solution with a magnetic stirrer
3. additionwas gradually added at room temperature in a nitrogen atmosphere
4. stirringThe reaction mixture was stirred for half a day
5. distillationethanol was distilled off under reduced pressure
6. concentrationThe resultant concentrate
7. additionwas dropped into 100 mL of diethyl ether
8. customtrimethoxysilylpropyldimethylamine and acetic acid as by-products were removed
9. customThis purification
10. distillationremaining diethyl ether was distilled off under reduced pressure
11. dissolutionby dissolving the resultant
12. concentrationconcentrate in ethanol