Interactions of Ionic Liquids with Polysaccharides 1. Unexpected Acetylation of Cellulose with 1-Ethyl-3-methylimidazolium Acetate
作者： Sarah Köhler , Tim Liebert , Michael Schöbitz , Jens Schaller , Frank Meister
关键词: Chloride 、 Polysaccharide 、 Cellulose 、 Cellulose acetate 、 Triphenylmethyl chloride 、 Sulfonyl halide 、 Chemistry 、 Ionic liquid 、 Acetic acid 、 Organic chemistry
摘要: The homogeneous conversion of cellulose in the ionic liquid 1-ethyl-3-methylimidazolium acetate with 2-furoyl chloride, p-toluenesulfonyl and triphenylmethyl chloride yields surprisingly pure samples any case. From NMR spectroscopic studies, it may be concluded that during functionalization reactive intermediates including furane-2-carboxylic acid/acetic acid anhydride acetic ester are formed leading to acetates DS values range from 0.55 1.86.
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