Abstract
L-Sorbose 1 was converted to 5-hydroxymethylfurfural 8 in choline chloride melts in moderate yields. A simplified synthesis of sorbosylurea tetraacetate 4 in two steps using urea melts was performed, achieving good yields.
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GRAPHICAL ABSTRACT
ACKNOWLEDGMENTS
We thank the Suedzucker AG and the Fachagentur fuer Nachwachsende Rohstoffe for financially supporting this project.