Interactions of ionic liquids with polysaccharides 1.: Unexpected acetylation of cellulose with 1-ethyl-3-methylimidazolium acetate

被引：112
|
作者：
Koehler, Sarah [1 ]
Liebert, Tim [1 ]
Schoebitz, Michael [1 ,2 ]
Schaller, Jens [2 ]
Meister, Frank [2 ]
Guenther, Wolfgang [3 ]
Heinze, Thomas [1 ,2 ]
机构：
[1] Univ Jena, Ctr Excellence Polysaccharide Res, D-07743 Jena, Germany
[2] Thuringian Inst Text & Plast Res, D-07407 Rudolstadt, Germany
[3] Univ Jena, Inst Organ Chem & Makromol Chem, D-07743 Jena, Germany
来源：
MACROMOLECULAR RAPID COMMUNICATIONS | 2007年 / 28卷 / 24期
关键词：
cellulose; ionic liquids; NMR; synthesis;
D O I：
10.1002/marc.200700529
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The homogeneous conversion of cellulose in the ionic liquid 1-ethyl-3-methylimidazolium acetate with 2-furoyl chloride, p-toluenesulfonyl chloride, and triphenylmethyl chloride yields surprisingly pure cellulose acetate samples in any case. From NMR spectroscopic studies, it may be concluded that during the homogeneous functionalization reactive intermediates including furane-2-carboxylic acid/acetic acid anhydride and acetic acid triphenylmethyl ester are formed leading to the cellulose acetates with DS values in the range from 0.55 to 1.86.
引用
收藏
页码：2311 / 2317
页数：7
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