1924
DOI: 10.1002/cber.19240571024
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Oxy‐aldehyde (VII.)

Abstract: Das Semicarbazon geht in verd. Lauge langsam mit intensiv gelber Farbe in Msung. Dies beruht, wie beim Chelidonsaure-ester selbst, auf Offnung des Pyronringes; denn beim Ansauern der mit wenig Lauge bereiteten Losung wird ein intensiv gelber, stickstoff-haltiger Stoff vom Schmp. qjo (Sintern bei 2650) ausgeschieden, offenbar das Mono-semicarbazon des Aceton-dioxalesters. Dies Verhalten ist wichtig; denn es zeigt, daI3 in dem urspriinglichen Semicarbazon der Pyronring noch unveriindert vorhanden ist, der Semica… Show more

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Cited by 18 publications
(3 citation statements)
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“…Methyl AZELAALDEHYDATE is a versatile chemical intermediate readily available from the ozonization of methyl oleate (7,10), yet relatively few acetal derivatives have been prepared. Only methyl (5), ethyl (4) (of the ethyl ester), and pentaerythritol (11) acetals have been reported. Pentaerythritol acetals Of homologous -formylalkanoic acids or their esters-glyoxylic (1), malonaldehydic (1, 2),'succinaldehydic (1), 4,4-dimethyl-and 4,4-diethylglutaraldehydic (J) acids-also have been reported.…”
mentioning
confidence: 99%
“…Methyl AZELAALDEHYDATE is a versatile chemical intermediate readily available from the ozonization of methyl oleate (7,10), yet relatively few acetal derivatives have been prepared. Only methyl (5), ethyl (4) (of the ethyl ester), and pentaerythritol (11) acetals have been reported. Pentaerythritol acetals Of homologous -formylalkanoic acids or their esters-glyoxylic (1), malonaldehydic (1, 2),'succinaldehydic (1), 4,4-dimethyl-and 4,4-diethylglutaraldehydic (J) acids-also have been reported.…”
mentioning
confidence: 99%
“…(3) H. L. Holmes and K, M. Mann, This Journal, 69, 2001 (1947). (4) This compound was first prepared by Dr, R. L. Clarke of this Laboratory; purification and analyses will be reported by him.…”
mentioning
confidence: 99%
“…The -hydroxy and -methoxy aldehydes prepared were those having 4,5,6,8,9 and 10 carbon atoms between the carbonyl oxygen and the hydroxy (or methoxy) group. Of these, 4-hydroxybutanal, 5-hydroxypentanal, 9-hydroxynonanal, 4-inethoxybutanal and 5-methoxypentanal were compounds known prior to this investigation.…”
mentioning
confidence: 99%