1958
DOI: 10.1002/cber.19580910118
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Heterocyclische Verbindungen, II. Über höherkondensierte Chinoxaline

Abstract: Die Kondensation von D‐Glucoson oder geeigneten Osonderivaten mit 1.2‐Diamino‐naphthalin führt unter bestimmten Bedingungen zu einheitlichen Verbindungen oder zu einem Gemisch der angular anellierten 2‐ bzw. 3‐[D‐arabo Tetrahydroxy‐butyl]‐5.6‐benzo‐chinoxaline. Eine Zuordnung der Isomeren zu den möglichen Strukturformeln konnte wahrscheinlich gemacht werden. Durch Umsetzung von 2.3‐Diamino‐naphthalin und 2.3‐Diamino‐phenazin mit den genannten Zuckerderivaten wurden das linear anellierte 2‐[D‐arabo‐Tetrahydroxy… Show more

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Cited by 22 publications
(4 citation statements)
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“…The reaction of isatin with naphthalene-1,8-diamine has also been described in the literature [20,21,22,23]. Here, we reinvestigated this reaction under the conditions involving the use of acetic acid as the solvent in the presence of a catalytic amount of p -toluenesulfonic acid.…”
Section: Resultsmentioning
confidence: 89%
“…The reaction of isatin with naphthalene-1,8-diamine has also been described in the literature [20,21,22,23]. Here, we reinvestigated this reaction under the conditions involving the use of acetic acid as the solvent in the presence of a catalytic amount of p -toluenesulfonic acid.…”
Section: Resultsmentioning
confidence: 89%
“…Condensation of mesoxalic acid and o-phenylenediamine proceeds as expected, producing 2-hydroxyquinoxaline-3-carboxylic acid (3) however, with sodium mesooxalate an anomalous reaction occurs2. The initial products 2-hydroxyquinoxaline-3carboxylic acid (3) and 1,2-dihydrobenzimidazole-2,2-dicarboxylic acid (4) undergo an intermolecular hydrogen transfer reaction to yield 1,2,3,4-tetrahydro-2oxoquinoxaline-3-carboxylic acid (5) and benzimidazole-2-carboxylic acid (6). Quinoxaline-2-ones (7) are obtained in excellent yields by the condensation of n-butyl glyoxalate and o-phenylenediamine 3 .…”
Section: Condensation Of O-diamines and Dicarbonyl Compoundsmentioning
confidence: 99%
“…Condensation of mesoxalic acid and o-phenylenediamine proceeds as expected, producing 2-hydroxyquinoxaline-3-carboxylic acid (3) however, with sodium mesooxalate an anomalous reaction occurs2. The initial products 2-hydroxyquinoxaline-3carboxylic acid (3) and 1,2-dihydrobenzimidazole-2,2-dicarboxylic acid (4) undergo an intermolecular hydrogen transfer reaction to yield 1,2,3,4-tetrahydro-2oxoquinoxaline-3-carboxylic acid (5) and benzimidazole-2-carboxylic acid (6).…”
Section: Condensation Of O-diamines and Dicarbonyl Compoundsmentioning
confidence: 99%