Color Reaction of Semicardazones and Thiosemicarbazones with Dimethylglyoxime and Hydroxybenzaldehydes

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Other Title
  • ジメチルグリオキシムとオキシベソツアルデヒドによるセミカルバゾン及びチオセミカルバゾン類の呈色反応について
  • ジメチルグリオキシムとオキシベンツアルデヒドによるセミカルバゾン及びチオセミカルバゾン類の呈色反応について
  • ジメチルグリオキシム ト オキシベンツアルデヒド ニ ヨル セミカルバゾン オヨビ チオセミカルバゾンルイ ノ テイショク ハンノウ ニ ツイテ

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Description

Aldehydes or ketone semicarbazones and semicarbazides, when heated with dimethylglyoxime and hydrochloric acid, give specific red to reddish purple coloration. A minute amount of the sample or one drop of its ethanolic solution is added with one drop of 3w/v% hydrochloric acid solution of dimethylglyoxime and heated in a water bath. Thiosemicarbazones and thiosemicarbazides do not give this coloration but the concurrent presence of o- or p-hydroxybenzaldehydes and alkoxybenzaldehydes results in red to reddish purple coloration, and the same in semicarbazones and semicarbazides results in far more sensitive coloration than in the case of dimethylglyoxime alone. A minute amount of the sample or one drop of its ethanolic solution, added with one drop of 3w/v% hydrochloric acid solution of dimethylglyoxime and one drop of 10w/v% ethanolic solution of vanillin is heated in a water bath by which, either immediately or after 5 minutes, red to reddish purple coloration appears.

Journal

  • YAKUGAKU ZASSHI

    YAKUGAKU ZASSHI 75 (10), 1249-1252, 1955

    The Pharmaceutical Society of Japan

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