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After the synthesis, your crude solid acetaminophen contains dark impurities, which have been formed from oxidation of the starting material, 4-aminophenol that carried along during the synthesis (if you have used 4-aminophenol as it is without purification). These impurities are intensely colored dyes of unknown structures with highly conjugated chromophore,...
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Dextrose equivalent $(DE)$ is a measure of the amount of reducing sugars present in a sugar product, expressed as a percentage on a dry basis relative to dextrose (glucose). Commercial sugar products are generally characterized by their dextrose equivalent $(DE)$ value (Ref.1). The theoretical definition of $DE$ is given by:
$$DE = \frac{\text{Reducing power ...
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I couldn't find a paper which directly discusses imine reduction with the help of sodium metal and alcohol but I did found its mention in a different paper which discusses the reduction using calcium and ethanol. I believe sodium metal follows similar reaction pathway.
The reduction of imines is one of the most significant and useful methods for preparation ...
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