1886
DOI: 10.1002/cber.18860190174
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Zur Kenntniss der Krokonsäure und Leukonsäure

Abstract: beziiglich der Isomerieverhaltnisse der Pyridindicarboiisauren gelost.Wenn nach W e i d e l und H e r z ig die Isocinchomeronsaure entweder das n$'-oder das PF-Derirat ist, so ist sie nach W e i s s mit der #'-Dicarbonsaure keinesfalls identisch,es bleibt daher fiir sie nur die apl'-Stellung der Carboxyle iibrig, wofiir Hr. W e i s s tibrigens in Karzem auch den experimentellen Beweis erbringen wird. Die aa'und die @/3'-Dicarbonsaure mit besonderem Namen zu belegen, wie dies W e i d e l fiir erstere wiinscht, … Show more

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Cited by 18 publications
(3 citation statements)
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“…Liebig 513 first converted ethanol into acetaldehyde by use of pyrolusite and precipitated manganese dioxide "Braunstein" in sulfuric acid. and Nietzki 514 used the reagent for oxidation of hydroxy aromatics in an alkaline medium. Bohn s1s in 1888. discovered that hydroxy groups can be introduced into anthraquinone by use of fuming sulfuric acid and manganese dioxide; in this way.…”
Section: Aromatic Systemsmentioning
confidence: 99%
“…Liebig 513 first converted ethanol into acetaldehyde by use of pyrolusite and precipitated manganese dioxide "Braunstein" in sulfuric acid. and Nietzki 514 used the reagent for oxidation of hydroxy aromatics in an alkaline medium. Bohn s1s in 1888. discovered that hydroxy groups can be introduced into anthraquinone by use of fuming sulfuric acid and manganese dioxide; in this way.…”
Section: Aromatic Systemsmentioning
confidence: 99%
“…Discussion Orocon1c acid (V) is one of the first enediol ic acids to have been reported. Since its discovery by Gmelin [29] in 1825, it has engaged the attention of many workers [10,[30][31][32][33][34][35][36][37][38][39]. As pointed out by Hirata and coworkers [36], the fLnion has an unusual resonance structure.…”
Section: Preparation Of Triquinoyl Octahydratementioning
confidence: 99%
“…Leuconic acid was prepared in solution by the oxidation of potassium croconate with the equivalent amount of nitric acid (50,51). When the solution of leuconic acid was adjusted to neutrality, to test for its clotting activity, great care had to be taken to avoid an alkaline reaction, since otherwise decomposition and precipitation of sodium mesoxalate (52) took place.…”
Section: Inactive Compoundsmentioning
confidence: 99%