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Article
Formazane als funktionelle Gruppen chelatbildender Ionenaustauscher. I
The preparation of substituted formazans and their fixation on cellulose, amino- and chloromethylated polystyrene is described. The capacities of the exchangers vary from 0.05 meq/g (cellulose) to 0.6 meq/g (p...
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Article
Substituierte 1,5-Diphenyl-3-phenylcarbamoylformazane als photometrische Reagentien für Palladium
The o-Cl substituted formazans I und II where newly synthesized and their application to the spectrophotometric determination of palladium has been evaluated. Formazan I reacts only in dioxanwater medium at pH...
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Article
Das Enolisierungsverhalten des 2-Benzoylacetoacetanilids
A study of the NMR and IR spectra shows 2-benzoylacetoacetanilide existing in the enol form in a rate of 85% (solvent acetone). Only two of the three possible enol tautomers can be proved in a rate of 38%: 47%...
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Article
Darstellung und Eigenschaften von 2-Alkyl- und 2-Allyl-acetoacetaniliden
The preparation of 2-alkyl and 2-allyl acetoacetarylamides is described. By interpretation of mass spectra a general fragmentation scheme of these compounds is proposed. NMR-spectroscopic investigations show, ...
