Trifluoromethanesulfonic acid → N-methoxymethyl-N-methylpyrrolidinium trifluoromethanesulfonate
反応式
[Cl-].[CH3:2][O:3][CH2:4][N+:5]1([CH3:10])[CH2:9][CH2:8][CH2:7][CH2:6]1.[F:11][C:12]([F:18])([F:17])[S:13]([OH:16])(=[O:15])=[O:14]>C(Cl)(Cl)Cl>[F:11][C:12]([F:18])([F:17])[S:13]([O-:16])(=[O:15])=[O:14].[CH3:2][O:3][CH2:4][N+:5]1([CH3:10])[CH2:9][CH2:8][CH2:7][CH2:6]1参加物
4
実験手順
In 116 g of dehydrated chloroform (reagent, Wako Pure Chemical Ind. Ltd.) was dissolved 24.3 g of N-methoxymethyl-N-methylpyrrolidinium chloride. To the solution was added dropwise 24.3 g of trifluoromethane sulfonic acid (reagent, Aldrich Corp.) at 5° C. over a period of 1 hour. The mixture was reacted at room temperature for 2 hours with gradual increase of temperature. The reaction mixture was concentrated and dried in a vacuum. The residue was purified through alumina column (ICN Biomedicals. GmbH, ICN Alumina N, Act.1/eluent acetonitrile). The eluate was concentrated and dried in a vacuum to obtain 39.1 g of the desired product (colorless liquid).