4-Imidazol-1-yl-butane-1-sulfonic acid ionic liquid: Synthesis, structural analysis, physical properties and catalytic application as dual solvent-catalyst
作者:Nader Ghaffari Khaligh、Taraneh Mihankhah、Mohd Rafie Johan、Joon Ching Juan
DOI:10.1080/10426507.2018.1487426
日期:2019.9.2
Abstract 4-Imidazol-1-yl-butane-1-sulfonic acid (ImBu-SO3H) has been successfully synthetized and fully characterized by FT-IR and high-resolution NMR spectroscopy (1H, 13C). The “plausible” alternative structures of ImBu-SO3H were discussed on the basis of its NMR data. The ionic liquid showed interesting dual solvent-catalyst property, which was studied experimentally for the acetylation of a variety
摘要 4-Imidazol-1-yl-butane-1-sulfonic acid (ImBu-SO3H) 已成功合成并通过 FT-IR 和高分辨率 NMR 光谱 (1H, 13C) 进行了充分表征。ImBu-SO3H 的“合理”替代结构在其 NMR 数据的基础上进行了讨论。离子液体显示出有趣的双溶剂-催化剂性质,实验研究了其乙酰化各种官能化的醇、酚、硫醇、胺和 α-生育酚 (α-CTP) 作为维生素 E 的最活性形式与乙酸酐并且在很短的反应时间内提供了良好的收率。ImBu-SO3H 通过产品萃取成功回收,随后 5 次运行的平均回收率为 82%。即使在连续五次运行后,回收的 ImBu-SO3H 的催化活性也几乎没有损失。图形概要