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Chemistry Letters
Vol. 38 (2009) No. 12 P 1178-1179

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http://doi.org/10.1246/cl.2009.1178

Letter

It is found that the dehydration of glucose to anhydroglucose, such as 1,6-anhydro-β-D-glucopyranose and 1,6-anhydro-β-D-glucofuranose, proceeds very effectively in hydrophobic ionic liquids, for example ionic liquid N,N-diethyl-N-(2-methoxyethyl)-N-methylammonium bis(trifluoromethanesulfonyl)amide, without any catalysts at high temperature. On the other hand, addition of a small amount of an ionic liquid with chloride anion reduces the yield of the anhydroglucose significantly.

Copyright © 2009 The Chemical Society of Japan

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