摘要
以烯烃和三聚甲醛为原料,采用酸功能化离子液体作催化剂,在无溶剂体系中经Prins反应合成了1,3-二氧己环衍生物.对不同离子液体的催化活性进行了考察,选择[BsTmG][HSO4]作为反应的催化剂.研究了温度、时间以及原料摩尔比对反应的影响,得到较佳实验条件为:催化剂用量为烯烃摩尔量的5%,三聚甲醛与烯烃摩尔比为1∶1,温度80℃,时间10 h.该催化体系具有较好的底物适用性,离子液体[BsTmG][HSO4]经简单的萃取分离后重复使用8次,仍保持较好的催化活性.
Some recyclable acidic functional ionic liquids have been used as catalysts for the synthesis of 1,3-dioxane derivatives in solvent-free system via Prins reaction, using olefin and triformol as substrates. The ionic liquid [ BsTmG] [ HSO4 ] exhibits the best catalytic activity for this reaction. The effects of the reaction conditions, such as reaction temperature, reaction time and molar ratio of materials, were examined and the optimal conditions were as follows： n （catalyst） ： n （alkene） = 5.0% , n （trifomol） ： n （alkene） = 1 ： 1, 80 ℃, 10 h. The catalytic system is suitable for a wide scope of substrates and the catalyst [ BsTmG] [ HSO4 ] could simply be recycled and reused for eight times without a noticeable decrease in the catalytic activity.
出处
《分子催化》
EI
CAS
CSCD
北大核心
2013年第2期107-114,共8页
Journal of Molecular Catalysis(China)
