Metal chlorides in ionic liquid solvents convert sugars to 5-hydroxymethylfurfural
Metal chlorides in ionic liquid solvents convert sugars to 5-hydroxymethylfurfural
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DOI：
10.1126/science.1141199
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发表时间：
2007-06-15
期刊：
影响因子：
56.9
通讯作者：
Zhang, Z. Conrad
中科院分区：
文献类型：
--
作者：
Zhao, Haibo;Holladay, Johnathan E.;Zhang, Z. Conrad
用生物质代替石油原料需要有效的方法将碳水化合物转化为各种化合物。我们报道了糖的催化转化，得到高产率的5-羟甲基糠醛（HMF），一种多功能中间体。1-烷基-3-甲基咪唑氯中的金属卤化物是催化剂，其中氯化铬（II）是唯一有效的催化剂，可以将葡萄糖转化为HMF，收率接近70%。广泛的金属卤化物被发现可以催化果糖转化为HMF。在这些反应中只产生少量的乙酰丙酸。
Replacing petroleum feedstocks by biomass requires efficient methods to convert carbohydrates to a variety of chemical compounds. We report the catalytic conversion of sugars giving high yield to 5-hydroxymethylfurfural (HMF), a versatile intermediate. Metal halides in 1-alkyl-3-methylimidazolium chloride are catalysts, among which chromium (II) chloride is found to be uniquely effective, leading to the conversion of glucose to HMF with a yield near 70%. A wide range of metal halides is found to catalyze the conversion of fructose to HMF. Only a negligible amount of levulinic acid is formed in these reactions.