CH136554A - Process for the preparation of a descendant of the pyrazolanthrone. - Google Patents

Process for the preparation of a descendant of the pyrazolanthrone.

Info

Publication number
CH136554A
CH136554A CH136554DA CH136554A CH 136554 A CH136554 A CH 136554A CH 136554D A CH136554D A CH 136554DA CH 136554 A CH136554 A CH 136554A
Authority
CH
Switzerland
Prior art keywords
pyrazolanthrone
preparation
phenylbenzanthrone
potash
descendant
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 CH136554A publication Critical patent/CH136554A/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
    • C09B5/00—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
    • C09B5/02—Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings the heterocyclic ring being only condensed in peri position
    • C09B5/04—Pyrazolanthrones
    • C09B5/06—Benzanthronyl-pyrazolanthrone condensation products

Landscapes

  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)

Description

  

  Verfahren zur Darstellung eines     Abkömtnlinges    des     Pyrazolanthrons.       Der Gegenstand der vorliegenden Erfin  dung ist ein Verfahren zur Darstellung eines       Bä-1-(Bz-2-Phenylbenzarithronyl)-Py-l-pyra-          zolanthrons    der Formel  
EMI0001.0005     
    durch     Aufeinandereinwirkenlassen    von     Bz-1-          Halogen-Bz-2-phenylbenzanthron,        Pyrazolan-          thron    und Pottasche. Das Produkt findet für  die Darstellung von     Küpenfarbstoffen    Ver  wendung.  



       Beispiel:     Zu einer aus 66 Gewichtsteilen     Py        ra-          zolanthron    und 66 Gewichtsteilen Pottasche  durch Erhitzen in 750 Gewichtsteilen Nitro-         benzol    hergestellten Paste von     Pyrazolanthron-          kali    -werden 103 Gewichtsteile     Bz-1-Chlor-          Bz-2-phenylbenzanthron    vom Schmelzpunkt  248  C zugegeben und etwa 8-10 Stunden  lang bei Siedetemperatur verrührt. Nach dem  Erkalten wird filtriert und mit Nitrobenzol,  Alkohol und Wasser gewaschen und ge  trocknet.

   Das so gewonnene     Bz-2-Phenyl-          uer)zanthronyl-pyrazolai)thron    bildet ein gelbes  Kristallpulver, das aus sehr viel     Pyridin    um  kristallisiert werden kann. Im reinen Zustande  schmilzt es bei 328-330  C und löst sich in  konzentrierter Schwefelsäure mit     gelbstichig-          roter    Farbe ohne Fluoreszenz.



  Process for the preparation of a derivative of the pyrazolanthrone. The subject of the present invention is a process for the preparation of a Bä-1- (Bz-2-phenylbenzarithronyl) -Py-l-pyrazolanthrone of the formula
EMI0001.0005
    by allowing Bz-1-halogen-Bz-2-phenylbenzanthrone, pyrazolanthrone and potash to act on one another. The product is used for the representation of vat dyes.



       Example: 103 parts by weight of Bz-1-chloro-Bz-2-phenylbenzanthrone with a melting point of 248 ° C. are added to a paste of pyrazole anthrone kali made from 66 parts by weight of pyrazolanthrone and 66 parts by weight of potash by heating in 750 parts by weight of nitrobenzene Stirred for about 8-10 hours at boiling temperature. After cooling, it is filtered and washed with nitrobenzene, alcohol and water and dried.

   The Bz-2-phenyl uer) zanthronyl pyrazolai) thron thus obtained forms a yellow crystal powder which can be crystallized from a great deal of pyridine. In the pure state it melts at 328-330 ° C. and dissolves in concentrated sulfuric acid with a yellowish-red color without fluorescence.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung von Bz-1-(Bz- 2 -Phenylbenzanthronyl)-Py-l-pyrazolanthron, dadurch gekennzeichnet, dass man Pyrazol- anthron, Bz-1-Halogen-Bz-2-phenylbenzanthron und Pottasche aufeinander einwirken lässt. Das Produkt bildet ein gelbes Pulver vom Schmelzpunkt 328-330 C und löst sich mit gelbstichigroter Farbe ohne Fluoreszenz in konzentrierter Schwefelsäure. UNTERANSPRüCHE 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Umsetzung bei einer Temperatur von 200 C bewirkt. 2. PATENT CLAIM: Process for the preparation of Bz-1- (Bz- 2-phenylbenzanthronyl) -Py-l-pyrazolanthrone, characterized in that pyrazolanthrone, Bz-1-halo-Bz-2-phenylbenzanthrone and potash are allowed to act on one another. The product forms a yellow powder with a melting point of 328-330 C and dissolves in concentrated sulfuric acid with a yellowish-red color without fluorescence. SUBClaims 1. The method according to claim, characterized in that the reaction is effected at a temperature of 200 ° C. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Pyrazolanthron mit Pottasche umsetzt und auf das so erhaltene Kaliumsalz des Pyrazolanthrons Bz-1-Halogeii-Bz-2-phenylbenzanthron ein wirken lässt. Process according to patent claim, characterized in that pyrazole anthrone is reacted with potash and the potassium salt of pyrazole anthrone thus obtained, Bz-1-Halogeii-Bz-2-phenylbenzanthrone, is allowed to act.
CH136554D 1927-10-22 1927-10-22 Process for the preparation of a descendant of the pyrazolanthrone. CH136554A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH136554T 1927-10-22
CH133473T 1927-10-22

Publications (1)

Publication Number Publication Date
CH136554A true CH136554A (en) 1929-11-15

Family

ID=25712066

Family Applications (1)

Application Number Title Priority Date Filing Date
CH136554D CH136554A (en) 1927-10-22 1927-10-22 Process for the preparation of a descendant of the pyrazolanthrone.

Country Status (1)

Country Link
CH (1) CH136554A (en)

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