The Structure And Reactivity Of The Hydrazone And Osazone Derivatives Of The Sugars

Add time:08/07/2019    Source:sciencedirect.com

Publisher SummaryThis chapter discusses the structure and reactivity of the hydrazone and osazone derivatives of the sugar. Fischer represented the hydrazones and osazones as open chain structures; one sees at once, however, other structural possibilities, because mutarotation occurs in solution in many cases. Information on these points sought by a study of rotation changes in solution, by the examination of derivatives and transformation products of the sugar hydrazones and osazones and by synthetic experiments. Votoček and Vondráček treated D-glucose phenylhydrazone with methylphenylhydrazine and obtained two osazones: A, m. p. 192°C; and B, m. p. 205° C. A is described as D-glucose phenyl methylphenyl-osazone and B as D-glucose methylphenyl-phenyl-osazone.

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