化学
产量(工程)
催化作用
异构化
氯化铝
溶剂
生物高聚物
5-羟甲基糠醛
脱水
路易斯酸
有机化学
羟甲基糠醛
氯化物
铝
生物化学
聚合物
材料科学
冶金
糠醛
作者
Sudipta De,Saikat Dutta,Basudeb Saha
出处
期刊:Green Chemistry
[The Royal Society of Chemistry]
日期:2011-01-01
卷期号:13 (10): 2859-2859
被引量:231
摘要
The common Lewis acid AlCl3 has efficiently produced 5-hydroxymethylfurfural (HMF) from carbohydrate and biopolymer substrates in water, DMSO, and water–methylisobutylketone biphasic solvents under microwave irradiation. The yield of HMF in different solvents follows an increasing order from water to water–MIBK biphasic solvent to DMSO. The yield of HMF increased with an increase in catalyst loading whereas it remains unchanged upon increase of the carbohydrate concentration. In most reactions, the maximum yield of HMF is recorded within 2 min of reaction time. The mechanism of the AlCl3 catalyzed glucose dehydration reaction is proposed to proceed through the isomerization of glucopyranose to fructofuranose, followed by a proton assisted transformation of fructofuranose to HMF.
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