1-(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazole 、
1-(2,6-dimethylphenyl)-4,5-dihydro-1H-imidazole 、
1,3-二溴丙烷 以
乙醚 为溶剂,
生成 1,3-propanediyl-1-[3-(2,6-dimethylphenyl)-4,5-dihydro-1H-imidazolium]-1-[3-(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazolium] dibromide 、 1,3-propanediylbis-1-[3-(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazolium] dibromide