Thermometrische Prüfung von Bromadditionsreaktionen zur StrukturaufklÄrung und quantitativen Analyse |
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Authors: | P Marik-Korda E Eckhart |
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Institution: | (1) Lehrstuhl für Allgemeine und Analytische Chemie, Technische UniversitÄt Budapest, Budapest, Ungarn |
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Abstract: | Zusammenfassung Durch Direktthermometrie lie\en sich organische Substanzen mit Doppelbindung z. B. verschiedene Arzneien, wie Chinin, Vasalgin mittels Bromwasserreagens quantitativ bestimmen. Die Ermittlung der Werte der ReaktionswÄrmen oder WÄrmeent-wicklungsgeschwindigkeiten ermöglicht eine schnelle Unterscheidung der cis- und trans-Isomeren wie Fumar- und MaleinsÄure, öl- und ElaidinsÄure usw.
Organic substances containing double bonds, e.g. allyl alcohol, and different medicaments (quinine, vasalgin), were determined with bromine water by direct injection enthalpimetry. Measurement of the reaction heat or the rate of evolution of heat permits simple and rapid distinction of cis and trans isomers: fumaric and maleic acid, or oleic and elaidinic acid.
Résumé Des substances organiques à liaisons doubles (par ex. l'alcool allylique, médicaments divers, la quinine, la vasalgine) ont été dosés par l'eau de brome, en utilisant la thermométrie directe. La mesure des chaleurs de réaction ou des vitesses du dégagement calorifique permettent une distinction rapide entre les isomères cis et trans: les acides fumarique et maléique, oléique et élaÏdique.
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