DE414924C - Process for the preparation of oxy compounds of the dibenzanthrone series - Google Patents

Process for the preparation of oxy compounds of the dibenzanthrone series

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Publication number
DE414924C
DE414924C DEF53409D DEF0053409D DE414924C DE 414924 C DE414924 C DE 414924C DE F53409 D DEF53409 D DE F53409D DE F0053409 D DEF0053409 D DE F0053409D DE 414924 C DE414924 C DE 414924C
Authority
DE
Germany
Prior art keywords
preparation
oxy compounds
dibenzanthrone series
dibenzanthrone
series
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DEF53409D
Other languages
German (de)
Inventor
Dr Karl Schirmacher
Dr Karl Zahn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Priority to DEF53409D priority Critical patent/DE414924C/en
Application granted granted Critical
Publication of DE414924C publication Critical patent/DE414924C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B3/00Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/22Dibenzanthrones; Isodibenzanthrones
    • C09B3/30Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus
    • C09B3/34Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus by oxidation

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

Verfahren zur Darstellung von Oxyverbindungen der Dibenzanthronreihe. Im weiteren Verlaufe der Untersuchungen über hydroxylierte Dibenzanthrone wurde gefunden, daß auch Oxybenzanthrone, welche sich von 3, 6 oder 7-Oxy-i-naphthoesäuren herleiten, d. h. die Oxygruppen- im Naphthalinreste enthalten, beim Verschmelzen mit Alkalien hydroxylierte Dibenzanthrone liefern.Process for the preparation of oxy compounds of the dibenzanthrone series. In the further course of the investigations on hydroxylated dibenzanthrones was found that also oxybenzanthrones, which differ from 3, 6 or 7-oxy-i-naphthoic acids derive, d. H. the oxy groups contained in the naphthalene residues when fused deliver dibenzanthrones hydroxylated with alkalis.

Diese neuen hydroxylierten Dibenzanthrone sind teils selbst Küpenfarbstoffe, teils als Ausgangsmaterialien für solche sehr wertvoll. Beispiel.Some of these new hydroxylated dibenzanthrones are themselves vat dyes, partly very valuable as starting materials for such. Example.

In eine Schmelze von ioo Teilen Kaliumhydroxyd und 5 Teilen Alkohol werden bei etwa i8o° unter Rühren io Teile Oxybenzanthron, das z. B. erhältlich ist durch Verbacken von 3-Methoxy-i-benzoylnaphthalin mit Aluminiumchlorid, eingetragen. Alsdann steigert man die Temperatur auf ?5o bis 27o° und erhitzt so lange, bis die Farbstoffbildung beendet ist, was nach etwa 15 Minuten der Fall ist. Man trennt den Farbstoff vom geschmolzenen Kali ab, trägt in Wasser ein und kocht unter gleichzeitigem Durchleiten von Luft. Nach dem Absäuern wird filtriert, ausgewaschen und getrocknet. Das Produkt stellt ein fast schwarzes Pulver dar, das sich mit alkalischem Hydrosulfit zu einer dunkelblauen Küpe löst. In derselben wird Baumwolle in blauen Tönen ausgefärbt.In a melt of 100 parts of potassium hydroxide and 5 parts of alcohol, 10 parts of oxybenzanthrone, which z. B. is available by baking 3-methoxy-i-benzoylnaphthalene with aluminum chloride entered. Then the temperature is increased to? Is 5o to 27o ° and heated until dye formation completed, which is the case after about 1 5 minutes. The dye is separated from the molten potash, poured into water and boiled while air is passed through at the same time. After acidification, it is filtered, washed and dried. The product is an almost black powder that dissolves with alkaline hydrosulfite to form a dark blue vat. In the same, cotton is dyed in blue tones.

Das als Ausgangsmaterial für die Herstellung des Farbstoffs dienende Oxybenzanthron stellt getrocknet ein olivschwarzes Pulver dar, das sich in Eisessig mit braungelber Farbe, in konzentrierter Schwefelsäure mit rotbrauner Farbe und ebensolcher Fluoreszenz, in verdünnter Alkalilauge mit gelbbrauner Farbe auflöst.The one used as the starting material for the manufacture of the dye Oxybenzanthrone is an olive-black powder that is dried in glacial acetic acid with a brownish yellow color, in concentrated sulfuric acid with a reddish brown color and same fluorescence, dissolves in dilute alkali lye with a yellow-brown color.

Claims (1)

PATENTANSPRUCH: Abänderung des durch Hauptpatent 414203 geschützten Verfahrens zur Darstellung von Oxyverbindungen der Dibenzanthronreihe, darin bestehend, daß man hier solche hydroxylierte Benzanthrone, welche die Hydroxylgruppen in 3-, 6- oder 7-Stellung zur CO-Gruppe im Naphthalinkern des angewandten Benzanthrons enthalten, mit Alkalien verschmilzt. PATENT CLAIM: Modification of the process for the preparation of oxy compounds of the dibenzanthrone series, protected by main patent 414203, consisting in the fact that here hydroxylated benzanthrones which contain the hydroxyl groups in the 3-, 6- or 7-position to the CO group in the naphthalene nucleus of the benzanthrone used, fuses with alkalis.
DEF53409D 1923-02-06 1923-02-06 Process for the preparation of oxy compounds of the dibenzanthrone series Expired DE414924C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF53409D DE414924C (en) 1923-02-06 1923-02-06 Process for the preparation of oxy compounds of the dibenzanthrone series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF53409D DE414924C (en) 1923-02-06 1923-02-06 Process for the preparation of oxy compounds of the dibenzanthrone series

Publications (1)

Publication Number Publication Date
DE414924C true DE414924C (en) 1925-06-11

Family

ID=7106280

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF53409D Expired DE414924C (en) 1923-02-06 1923-02-06 Process for the preparation of oxy compounds of the dibenzanthrone series

Country Status (1)

Country Link
DE (1) DE414924C (en)

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