CH120716A - Process for the preparation of isodibenzanthrone. - Google Patents

Process for the preparation of isodibenzanthrone.

Info

Publication number
CH120716A
CH120716A CH120716DA CH120716A CH 120716 A CH120716 A CH 120716A CH 120716D A CH120716D A CH 120716DA CH 120716 A CH120716 A CH 120716A
Authority
CH
Switzerland
Prior art keywords
isodibenzanthrone
violet
preparation
bzl
weight
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH120716A publication Critical patent/CH120716A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/22—Dibenzanthrones; Isodibenzanthrones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
    • C07C45/72—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms by reaction of compounds containing >C = O groups with the same or other compounds containing >C = O groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung von     Isodibenzanthron.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung von     Isodibenz-          anthro.n.    Das Verfahren besteht darin,. dass  man     Bzl-Thiophenylbenzanthron    folgender  Formel:  
EMI0001.0005     
    mit alkalischen Kondensationsmitteln, ins  besondere alkoholischem     Ätzkali,    behandelt.

    <I>Beispiel:</I>  In eine Schmelze von     äthylalkoholischem     Kali, hergestellt durch     Erhitzen    von 100 Ge  wichtsteilen Kalihydrat und 100 Gewichts  teilen Äthylalkohol auf 135   unter     Abdestil-          lieren    des überschüssigen Alkohols, trägt man  bei 135 bis 140' 25 Gewichtsteile     Bzl-Thio-          phenylbenzanthron,    erhältlich zum Beispiel  durch mehrstündiges Kochen von     Bzl-Chlor-          benzanthron    mit der berechneten Menge       Thiophenol        und    Kalihydrat in alkoholischer  Lösung,

   ein     und    rührt die Schmelze eine  Stunde bei 140  . Nach dieser Zeit verdünnt  man mit Wasser, leitet in die Suspension    Luft ein,     solange    noch Farbstoff in Form der  Hydroverbindung in Lösung ist, filtriert     -und     wäscht mit Wasser gut aus. Der erhaltene  Farbstoff ist     Isodibenzanthron,    welches prak  tisch vollständig frei von     Dibenzanthron    ist.  Er stellt     ein    dunkelviolettes Pulver dar, das       sick    in konzentrierter Schwefelsäure mit rein  grüner Farbe löst und Baumvolle aus blau  violetter     Hydrosulfitküpe        rotstichig    violett  färbt.  



  An Stelle von     Athylalkohol    kann man  auch andere Alkohole, an Stelle von Kali  hydrat andere     Ätzälkalien    verwenden.



  Process for the preparation of isodibenzanthrone. The subject of this additional patent is a process for the representation of Isodibenz- anthro.n. The procedure is. that you can Bzl-Thiophenylbenzanthron following formula:
EMI0001.0005
    treated with alkaline condensation agents, especially alcoholic caustic potash.

    <I> Example: </I> In a melt of ethyl alcoholic potash, produced by heating 100 parts by weight of potassium hydrate and 100 parts by weight of ethyl alcohol to 135 while distilling off the excess alcohol, 135 to 140 parts by weight of 25 parts by weight Bzl- Thiophenylbenzanthrone, obtainable for example by boiling Bzl-chlorobenzanthrone for several hours with the calculated amount of thiophenol and potassium hydrate in an alcoholic solution,

   and stir the melt for one hour at 140. After this time, the mixture is diluted with water, air is passed into the suspension while the dye is still in solution in the form of the hydrocompound, filtered and washed thoroughly with water. The dye obtained is isodibenzanthrone, which is practically completely free of dibenzanthrone. It is a dark violet powder that dissolves in concentrated sulfuric acid with a pure green color and turns trees from a blue-violet hydrosulfite vat into a reddish violet.



  Other alcohols can be used instead of ethyl alcohol, and other caustic alkalis can be used instead of potassium hydrate.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Isodibenz- anthron, dadurch gekennzeichnet, dass man Bzl-Thiophenylbenzanthron- mit einem al kalischen Kondensationsmittel behandelt. Der so erhaltene Farbstoff -stellt .ein dun kelviolettes Pulver dar; das sich in konzen trierter Schwefelsäure mit rein grüner Farbe löst und Baumwolle aus blauvioletter Ilydro- sulfitküpe rotstichig violett färbt. PATENT CLAIM: Process for the preparation of isodibenzanthrone, characterized in that Bzl-thiophenylbenzanthrone is treated with an alkaline condensation agent. The dye thus obtained represents a dark violet powder; which dissolves in concentrated sulfuric acid with a pure green color and dyes cotton from a blue-violet ilydrosulfite vat a reddish violet.
CH120716D 1925-11-02 1925-11-02 Process for the preparation of isodibenzanthrone. CH120716A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH120716T 1925-11-02
CH119233T 1927-12-05

Publications (1)

Publication Number Publication Date
CH120716A true CH120716A (en) 1927-07-01

Family

ID=25709223

Family Applications (1)

Application Number Title Priority Date Filing Date
CH120716D CH120716A (en) 1925-11-02 1925-11-02 Process for the preparation of isodibenzanthrone.

Country Status (1)

Country Link
CH (1) CH120716A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123285B (en) * 1959-07-28 1962-02-08 Basf Ag Dyeing and printing of structures made of linear fiber-forming polyesters
US3280126A (en) * 1960-10-28 1966-10-18 Ciba Ltd Sulfonated phenoxy and phenylthio dye derivatives

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1123285B (en) * 1959-07-28 1962-02-08 Basf Ag Dyeing and printing of structures made of linear fiber-forming polyesters
US3280126A (en) * 1960-10-28 1966-10-18 Ciba Ltd Sulfonated phenoxy and phenylthio dye derivatives

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