期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 6, 期 7, 页码 9434-9441出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.8b01788
关键词
Deep eutectic solvents; NMR; Glucosamine; Arginine; Deoxyfructosazine
资金
- Key Research and Development Program of Shanxi Province [201703D421041]
- CAS President's International Fellowship Initiative [2015VMB052]
Deep eutectic solvents (DESs) exhibit similar physicochemical properties to the ionic liquids. They are inexpensive, renewable, nontoxic, and environmentally benign solvents and have gradually attracted attention in several fields, for example, biorefinery. Here choline chloride-based DESs have been used as solvents and catalysts for the preparation of deoxyfructosazine (DOF) through a self-condensation reaction of d-glucosamine (GlcNH(2)). The catalytic performances of a green cocatalyst, amino acids, and the reaction mechanism were also studied. The results displayed that choline chloride/urea was capable to convert GlcNH(2) efficiently, with a 13.5% yield of DOF at low temperature and with a short reaction time (100 degrees C, 150 min). Among the screened amino acids, arginine showed the highest activity and gave the highest yield of DOF (30.1%) under the optimized reaction conditions. Nuclear magnetic resonance (NMR) studies revealed a strong hydrogen bond interaction between GlcNH(2) and arginine. Moreover, a detectable intermediate, namely dihydrofructosazine, in the condensation of GlcNH(2) to DOF/fructosazine (FZ) was captured by in situ NMR technique.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据