[Br:1][CH2:2][CH2:3][CH3:4].[CH3:5][N:6]1[CH2:10][CH2:9][CH2:8][CH2:7]1>>[Br-:1].[CH2:2]([N+:6]1([CH3:5])[CH2:10][CH2:9][CH2:8][CH2:7]1)[CH2:3][CH3:4](Propyl)(methyl)pyrrolidinium bromide is prepared by reaction of 12.4 g of 1-bromopropane with 8.5 g of N-methylpyrrolidine at normal temperature.
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