Summary
Oximes couple in alkaline medium with diazonium salts to give arylazo-bis-oximes which develop an intense blue colour with ferric chloride; 50μg of an oxime can be detected in 0.25 ml of total solution on a spot-plate by this method.
Zusammenfassung
Oxime Kuppeln in alkalischem Medium mit Diazoniumsalzen unter Bildung von Arylazo-bis-oximen, die ihrerseits mit Eisen(III)-chlorid eine intensive Blaufärbung geben. 50μg Oxim können so in 0,25 ml Reaktionsgemisch auf der Tüpfelplatte nachgewiesen werden.
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References
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M. Elkins andL. Hunter, J. Chem. Soc. London1938, 1346;1940, 653.
J. Mai, Ber. dtsch. chem. Ges.25, 1685 (1892).
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The authors express their gratitude to ProfessorR. C. Mehrotra for providing facilities in the Department.
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Bhargava, S.P., Sogani, N.C. A new spot test for oximes. Mikrochim Acta 59, 391–392 (1971). https://doi.org/10.1007/BF01219641
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DOI: https://doi.org/10.1007/BF01219641