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Selective dehydration of glucose to anhydroglucoses, 1,6-anhydro-β-d-glucopyranose (levoglucosan) and 1,6-anhydro-β-d-glucofuranose, which are highly value-added intermediates for drugs, polymers, and surfactants was performed. Solid acids with sulfonic acid groups like Amberlyst-15 were found to effectively produce anhydroglucoses in polar aprotic solvents.
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Takagaki et al. (2009) studied this question.
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