[CH3:1][N:2]([CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)[CH3:3].[ClH:11]>CCCCCCC>[ClH:11].[CH3:1][NH+:2]([CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)[CH3:3]12.12 g of N,N-dimethylbenzylamine and 400 ml of heptane were placed under argon in a 500 ml three-necked flask fitted with internal thermometer and gas inlet stopcock. HCl gas from a gas generation apparatus was passed into this reaction mixture for 1 hour. The N,N-dimethylbenzylammonium hydrochloride formed was separated off via a G4 frit, washed with 100 ml of heptane and dried in an oil pump vacuum. 13.14 g (85%) of the desired product were isolated.
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