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Xylan derivatives: Benzyl ethers, synthesis, and characterization

机译:木聚糖衍生物:苄基醚,合成与表征

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The -2,3-bis(benzyl ether) of xylan, a natural polysaccharide, has been prepared by using a new benzylation method. This method was first tested on methyl-beta-D-xylopyranoside, the monomer model of xylan. It implies the use of potassium hydroxyde, a crown ether as a catalyst, and benzyl bromide as a benzylating agent. Perbenzylated xylan is obtained with a good yield (80%) in a one-step reaction. It is soluble in most organic solvents. The C-13- and H-1-NMR spectra of this polymer were assigned and are typical of a regular linear polymer. Differential thermal analysis and thermogravimetry indicate the temperature range at which this polymer can be processed at high temperature. (C) 1998 John Wiley & Sons, Inc. [References: 9]
机译:木聚糖的-2,3-双(苄基醚)是一种天然多糖,它是使用新的苄基化方法制备的。该方法首先在木聚糖的单体模型甲基-β-D-吡喃吡喃糖苷上进行了测试。这意味着使用羟化钾,冠醚作为催化剂,以及苄基溴作为苄基化剂。在一步反应中,以高收率(80%)获得过苄基木聚糖。它可溶于大多数有机溶剂。分配了该聚合物的C-13-和H-1-NMR光谱,这是常规线性聚合物的典型特征。差示热分析和热重分析表明该聚合物可以在高温下加工的温度范围。 (C)1998 John Wiley&Sons,Inc. [参考:9]

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