Summary
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1.
The formation of levoglucosan in the thermal decomposition of glucose was proved by the isolation of levoglucosan with the aid of anion-exchange agents and its identification. The yield did not exceed 6% on the amount of β -glucose taken. Unlike the thermal decomposition of cellulose, in which levoglucosan is the main product, the thermal decomposition of β -glucose yields levoglucosan only as a byproduct.
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2.
Hydrolysis of cellulose to $ -glucose and subsequent dehydration cannot be regarded as the main course taken by the reaction resulting in the formation of levoglucosan in the thermodegradation of cellulose in a vacuum.
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Literature Cited
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Golova, O.P., Andrievskaya, E.A., Pakhomov, A.M. et al. Transformations of cellulose at elevated temperatures Communication 3. Formation of levoglucosan fromβ -d-glucose. Russ Chem Bull 6, 399–401 (1957). https://doi.org/10.1007/BF01173349
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DOI: https://doi.org/10.1007/BF01173349