Effect of Different Ionic Liquids on 5-Hydroxymethylfurfural Preparation from Glucose in DMA over AlCl<sub>3</sub>: Experimental and Theoretical Study
作者:Yan Yang、Wentao Liu、Ningning Wang、Haijun Wang、Wei Li、Zhanxin Song
DOI:10.1002/cjoc.201500030
日期:2015.5
In this work, effect of different ionic liquids (ILs) on 5‐hydroxymethylfurfural (HMF) preparation from glucose in N,N‐dimethylacetamide (DMA) over AlCl3 was revealed by a combined experimental and computational study. ILs used as cocatalysts in this work included N‐methyl‐2‐pyrrolidone hydrogen sulfate ([NMP]HSO4), N‐methyl‐2‐pyrrolidone methyl sulfate ([NMP]CH3SO3), N‐methyl‐2‐pyrrolidone chlorine
在这项工作中,通过结合实验和计算研究,揭示了不同离子液体(ILs)对N,N-二甲基乙酰胺(DMA)中葡萄糖在AlCl 3上由葡萄糖制备5-羟甲基糠醛(HMF)的影响。在这项工作中用作助催化剂的ILs包括N-甲基-2-吡咯烷酮硫酸氢盐([NMP] HSO 4),N-甲基-2-吡咯烷酮甲基硫酸盐([NMP] CH 3 SO 3),N-甲基-2-吡咯烷酮氯([NMP] Cl)和N-甲基-2-吡咯烷酮溴化物([NMP] Br),具有相同的阳离子,但具有不同的阴离子。根据果糖是葡萄糖到HMF的中间产物的结论,我们发现果糖被[NMP] HSO 4转化为更多的副产物,当以葡萄糖为底物时HMF的产量显着下降。[NMP] CH 3 SO 3不能有效地转化葡萄糖和果糖,因此对葡萄糖转化为HMF没有影响。[NMP] Br对果糖中HMF的选择性高于[NMP] Cl和AlCl 3。此外,铝3+首选与溴结合-,在393