Process for preparing 4,4'-dibenzoylaminodianthrimidecarbazole

Process for preparing 4,4'-dibenzoylaminodianthrimidecarbazole

Process for preparing 4,4'-dibenzoylaminoanthrimidecarbazole, characterized in that 4,4'-diaminodianthrimide is benzoylated and carbazolated, both steps being carried out in one-vessel fashion and the 4,4'-diaminodianthrimide having been obtained by oxidizing a mixture of 1-aminoanthr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: STAWITZ, JOSEF
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
HETEROCYCLIC COMPOUNDS
LAKES
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MORDANTS
NATURAL RESINS
ORGANIC CHEMISTRY
ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:Process for preparing 4,4'-dibenzoylaminoanthrimidecarbazole, characterized in that 4,4'-diaminodianthrimide is benzoylated and carbazolated, both steps being carried out in one-vessel fashion and the 4,4'-diaminodianthrimide having been obtained by oxidizing a mixture of 1-aminoanthraquinone and 1,4-diaminoanthraquinone in a molar ratio of 0.9:1 to 1.4:1 in 30 to 60% strength H2SO4 and then reducing.