1,1-(
1,4-丁基)二咪唑的合成:
取3.40 g(50 mmol)咪唑，2.00 g(50 mmol)氢
氧化钠粉末，溶于10 mL
二甲亚砜中，加热至60 ℃，搅拌1小时，后慢慢滴加5.40 g(25 mmol)1,4-二溴丁烷，加热至60 ℃反应2小时,反应结束至室温后，立即将产品倒入200 mL 蒸馏水中,可见白色针状晶体析出.
相关文献调研：
Synthesis of 1,10-(1,4-butanediyl)bis(imidazole) (L)A mixture of imidazole (3.4 g, 50 mmol) andNaOH (2.0 g, 50 mmol) in DMSO (10 ml) was stirred at 60 C for 1 h, then 1,4-dichlorobutane (3.2 g, 25mmol) was added. The mixture was cooled to room temperature after stirring at 60 C for 2 h, then poured into 200 ml of water and a white solid formed immediately which weighted 4.1 g after drying in air.
问题：将反应完的溶液倒入水中后没有产生任何沉淀，请问是什么原因呢，望大神解答
