[CH2:1]([O:3][CH:4]([C:8]1[N:9]([CH3:13])[CH:10]=[CH:11][N:12]=1)[O:5][CH2:6][CH3:7])[CH3:2].[CH2:14]([Br:21])[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1>>[Br-:21].[CH2:14]([N:12]1[CH:11]=[CH:10][N+:9]([CH3:13])=[C:8]1[CH:4]([O:3][CH2:1][CH3:2])[O:5][CH2:6][CH3:7])[C:15]1[CH:20]=[CH:19][CH:18]=[CH:17][CH:16]=1A reaction mixture of 8 g (43 mmol) of 2-(diethoxymethyl-1-methyl-imidazole and 7.44 g (43 mmol) of benzyl bromide was stirred at room temperature overnight. The mixture was triturated with ethyl acetate and decanted to afford 15.1 g (98.3%) of 3-benzyl-2-(diethoxymethyl)-1-methylimidazolium bromide (Formula VI: A=1-methylimidazole; Y=CH(OC2H5)2 ; R1 =R6 =H; Z- =Br-).
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