[Br:1][CH2:2][CH2:3][CH2:4]Br.[CH2:6]([N:8]([CH2:11][CH3:12])[CH2:9][CH3:10])[CH3:7]>C1(C)C=CC=CC=1>[Br-:1].[Br:1][CH2:2][CH2:3][CH2:4][N+:8]([CH2:11][CH3:12])([CH2:9][CH3:10])[CH2:6][CH3:7]1,3-Dibromopropane (20.0 g, 100 mmol) and triethylamine (5.06 g, 50 mmol) were mixed in dry toluene (50 ml). This solution was heated at 100° C. under nitrogen atmosphere for 4 h, during which time a thick white solid precipitated. The mixture was then cooled and the solid collected by filtration, washed with toluene and ether and dried under vacuum at 50° C. to give the titled compound 5.0 g (36%).
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