Br[CH2:2][CH2:3][CH2:4][CH2:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1.[CH3:12][NH:13][CH3:14].C(O)C.C(=O)(O)[O-].[Na+]>C1C=CC=CC=1.C(OCC)(=O)C>[CH3:12][N:13]([CH2:2][CH2:3][CH2:4][CH2:5][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1)[CH3:14]To 426 mg of the colorless liquid (4-bromobutyl)benzene were added 1.05 ml of 50% dimethylamine aqueous solution and 1 ml of ethanol, and the mixture was stirred at a room temperature for 520 minutes. To the reaction mixture were added 30 ml of ethyl acetate and 10 ml of 5% sodium bicarbonate aqueous solution. The separated organic layer was washed with a saturated sodium chloride aqueous solution, dried over magnesium sulfate, and evaporated under a reduced pressure to obtain a residue. To the residue was added 20 ml of benzene, then was washed with water and a saturated sodium chloride aqueous solution, dried over magnesium sulfate, and evaporated under a reduced pressure to obtain 287 mg of the title compound as colorless liquid.
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