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Base-catalysed isomerisation of aldoses of the arabino and lyxo series in aluminate solution has been investigated. l-Arabinose and d-galactose give l-erythro-2-pentulose (l-ribulose) and d-lyxo-2-hexulose (d-tagatose), respectively, in good yields, whereas lower reactivity is observed for 6-deoxy-d-galactose (d-fucose). From d-lyxose, d-mannose and 6-deoxy-l-mannose (l-rhamnose) are obtained mixtures...
Reactions of reducing sugars with ammonia and its compounds are important commercially, particularly in the preparation of flavors and caramel colors. However, such reactions generally produce a complex series of products ranging from simple molecules to complex polymeric materials, particularly since commercial systems generally involve mixtures of sugars as opposed to single sugars. This complexity...
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