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the reaction mechanism is demonstrated starting from the reaction of d-mannose in its closed (1) and open-form (2) with ammonia to produce the 1,1-amino-alcohol (3), which is unstable and loses water to the glycosylamine (again the open imine (5) and the closed form hemiaminal (4)), which is the starting point for the actual amadori rearrangement.
== mechanismus ==bei dieser chemischen reaktion kommt es zunächst zur bildung eines enols (4), das sich durch verschiebung eines wasserstoffatoms von der oh-gruppe in die c-1-stellung stabilisiert.