1965
DOI: 10.1135/cccc19653718
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Imidazol-Farbstoffe XV. Darstellung von Aroylenimidazolfarbstoffen und Einfluss der Substitution auf ihre Farbigkeit

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Cited by 8 publications
(4 citation statements)
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“… mehrstündiges Sieden der Ausgangsverbindungen in konzentrierter Essigsäure unter Rückfluss; Kondensation der Ausgangsstoffe in Imidazol unter Verwendung von Zn(OAc) 2 als Katalysator, was der Langhals‐Methode zur Synthese von Perylenbisimiden entspricht; rasche Kondensation (15 min) in H 3 PO 4 bei 190 °C; Vorkondensation zu α‐Aminoimidazolen oder α‐Carbonsäureimiden in H 2 O unter Rückfluss, gefolgt von der Festkörper‐Kondensation zu Perinon …”
Section: Figureunclassified
“… mehrstündiges Sieden der Ausgangsverbindungen in konzentrierter Essigsäure unter Rückfluss; Kondensation der Ausgangsstoffe in Imidazol unter Verwendung von Zn(OAc) 2 als Katalysator, was der Langhals‐Methode zur Synthese von Perylenbisimiden entspricht; rasche Kondensation (15 min) in H 3 PO 4 bei 190 °C; Vorkondensation zu α‐Aminoimidazolen oder α‐Carbonsäureimiden in H 2 O unter Rückfluss, gefolgt von der Festkörper‐Kondensation zu Perinon …”
Section: Figureunclassified
“…Half-wave potentials for 10 aromatic ,/3-unsaturated ketones (70) and 1,3indandiones substituted in the 2-position by 0-and p-substituents (772) were correlated to Hammett values. Correlations were made between half-wave potentials of 22 diones of the variety, 1.3-indandione and 4,5,6,7-tetrahydro-1.3-indandione and energy of the lowest vacant electron orbital (776).…”
Section: Irreversible Systemsmentioning
confidence: 99%
“…EXPERIMENTAL Compounds I and II were obtained as described in ref. 4 , compounds III and Vas in ref. 3.…”
Section: Theoreticalmentioning
confidence: 99%
“…reU), have been prepared by condensing 1,4,5,8-naphthalenetetracarboxylic acid with 1,2-diaminobenzene 2 • The course of the electrophilic nitration of naphthoylenebenzimidazole III (benzimidazo [2, I-a Jbenz[ de ]-isoquinoline-7-one) and of its various nitro derivatives has been also studied and the positions of a bsorption maxima in the electronic spectra of compounds III and V and their nitro derivatives given 3 • Absorption maxima of compounds I and II are given in ref. 4.…”
mentioning
confidence: 99%