摘要
考察了Brnsted酸性离子液体同时作为溶剂和催化剂催化异丁醛和叔丁醇缩合制备2,5-二甲基-2,4-己二烯的反应性能.结果表明,Brnsted酸性离子液体具有良好的催化性能,反应后反应产物与离子液体自动分层易分离,离子液体经过真空干燥处理后可以作为溶剂和催化剂循环使用.调变离子液体中的阳离子或阴离子的结构对催化性能有较大的影响.
Catalytic synthesis of 2,5-dimethyl-2,4-hexadiene by Prins condensation of iso-butanal and tert-uutyl alcohol was investigated using Bronsted acidic ionic liquids as both catalyst and solvent. It was found that all the ionic liquids were active for Prins condensation. After reaction, the upper organic phase could be easily separated from the ionic liquid by decantation. The ionic liquids could be reused in the next run by heat treatment under vacuum. Manipulating the structure of ionic liquids with respect to the organic cation or the organic/inorganic anion had great effects on the catalytic performance of the ionic liquids.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2007年第11期1009-1012,共4页
