桦木木聚糖与氨基磺酸在1,4-二恶烷中的基化反应

IF 0.5 Q4 CHEMISTRY, MULTIDISCIPLINARY Journal of Siberian Federal University. Chemistry Pub Date : 2021-09-01 DOI:10.17516/1998-2836-0241

V. Levdansky, A. Kondrasenko, A. Levdansky, B. Kuznetsov

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引用次数: 0

摘要

首次研究了在尿素存在下，磺胺酸在90℃和100℃下对1,4-二恶烷中桦木木聚糖的磺化反应。研究了木聚糖磺化时间对木聚糖硫酸盐收率和硫酸盐中硫含量的影响。结果表明，随着硫化时间从2小时增加到4小时，得到的木聚糖硫酸盐中硫含量从12.5 wt%增加到17.5%。用傅立叶变换红外光谱(FTIR)和核磁共振光谱(NMR)研究了初始木聚糖和磺化木聚糖的结构。与在吡啶和N, N -二甲基甲酰胺中磺化得到的木聚糖硫酸盐相比，从1,4-二氧六环中得到的木聚糖硫酸盐易于纯化，这是木聚糖磺化方法的一个优点

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Sylfation of Birch Wood Xylan with Sulfamic Acid in 1,4-dioxane

Sulfation of birch wood xylan in 1,4-dioxane by sulfamic acid in the presence of urea at 90 and 100 °C was studied for the first time. The effect of the duration of xylan sulfation on the yield of xylan sulfates and the sulfur content in them was studied. It was found that the sulfur content in the obtained xylan sulfates increases from 12.5 to 17.5 wt% with an increase in the duration of sulfation from 2 to 4 hours. The structure of initial and sulfated xylan was studied by FTIR and NMR spectroscopy. The ease of purification of the obtained xylan sulfates from 1,4-dioxane in comparison with the purification of xylan sulfates obtained by sulfation in pyridine and N, N‑dimethylformamide is an advantage of the proposed method of xylan sulfation

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来源期刊

Journal of Siberian Federal University. Chemistry CHEMISTRY, MULTIDISCIPLINARY-

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1.10

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