CH151866A - Process for the preparation of a chlorine-containing 1.2.5.6-diphtaloylnaphthalene. - Google Patents

Process for the preparation of a chlorine-containing 1.2.5.6-diphtaloylnaphthalene.

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Publication number
CH151866A
CH151866A CH151866DA CH151866A CH 151866 A CH151866 A CH 151866A CH 151866D A CH151866D A CH 151866DA CH 151866 A CH151866 A CH 151866A
Authority
CH
Switzerland
Prior art keywords
chlorine
preparation
diphtaloylnaphthalene
sulfuric acid
concentrated sulfuric
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 CH151866A publication Critical patent/CH151866A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

      Verfahren    zur Darstellung eines chlorhaltigen     1.2.6.6-Diphtaloyliiaphtalins.       Gegenstand dieses Patentes ist ein Ver  fahren zur Darstellung eines chlorhaltigen       1.2.5.6-Diphtaloylnaphtalins,    dadurch ge  kennzeichnet, dass man 2' .     2"-Dinitrilo-j'    .     5"-          dichlor-l.5-dibenzoylnaphtalin    mit sauren  Kondensationsmitteln behandelt. Das gelbe  chlorhaltige 1. 2. 5.     6-Diphtaloylnaphtalin    löst  sich in konzentrierter Schwefelsäure rotorange,  gibt eine braune     Küpe    und schmilzt über  400'.

   Das chlorhaltige 1. 2 . 5 .     6-Diphtaloyl-          naphtalin    ist eine neue Verbindung und soll  als Zwischenprodukt für Farbstoffe dienen.  Als saure Kondensationsmittel kommen in  Frage Schwefelsäure verschiedener Konzen  tration,     Chlorsulfonsäure,    Aluminiumchlorid  und andere.  



  Die Bildung des chlorhaltigen     1.2.5.6-          Diphtaloylriaphtalins    aus dem 2'     2"-Dinitrilo-          :,'        S"-dichlor-1.        5-diberizoylnaphtalin    verläuft  über das     2'.2"-Dicarboxy-5'.5"-dichlor-1.5-          dibenzoylnaphtalin.       <I>Beispiel:</I>  1 Gewichtsteil       chlor-1.5-dibenzöylnaphtaliri    wird in 10 Ge  wichtsteilen 82     o/oiger        Schwefelsäure    gelöst.  Die Lösung wird kurz zum Sieden erhitzt.  Beim Verdünnen mit Wasser fällt das chlor  haltige 1 .2. 5.     6-Diphtaloylnaphtalin    aus.

   Das  gelbe chlorhaltige     1.2.5.6-Diphtaloylnaph-          talin    löst sich in konzentrierter Schwefelsäure       otorange,    gibt eine braune     Küpe    und     schmilz     über 400  .



      Process for the preparation of a chlorine-containing 1.2.6.6-Diphtaloyliiaphtalins. The subject of this patent is a process for the preparation of a chlorine-containing 1.2.5.6-Diphtaloylnaphtalins, characterized in that one 2 '. 2 "-Dinitrilo-j '. 5" - dichloro-1.5-dibenzoylnaphthalene treated with acidic condensing agents. The yellow chlorine-containing 1. 2. 5. 6-Diphtaloylnaphtalin dissolves in concentrated sulfuric acid red-orange, gives a brown vat and melts over 400 '.

   The chlorine-containing 1. 2. 5. 6-Diphtaloylnaphtalin is a new compound and is supposed to serve as an intermediate product for dyes. Suitable acidic condensing agents are sulfuric acid of various concentrations, chlorosulfonic acid, aluminum chloride and others.



  The formation of the chlorine-containing 1.2.5.6-Diphtaloylriaphtalins from the 2 '2 "-Dinitrilo-:,' S" -dichlor-1. 5-diberizoylnaphthalene passes through the 2'.2 "-dicarboxy-5'.5" -dichloro-1.5-dibenzoylnaphthalene. <I> Example: </I> 1 part by weight of chloro-1,5-dibenzöylnaphtaliri is dissolved in 10 parts by weight of 82% sulfuric acid. The solution is briefly heated to the boil. When diluting with water, the chlorine-containing 1 .2. 5. 6-diphtaloylnaphthalene.

   The yellow chlorine-containing 1.2.5.6-Diphtaloylnaph- talin dissolves in concentrated sulfuric acid otorange, gives a brown vat and melts over 400.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines chlor haltigen 1.2.5.6-Diphtaloylnaphtalins, da durch gekennzeichnet, dass man 2'.2"-Dini- trilo - 5'. 5" - dichlor -1 . 5 - dibenzoylnaphtalin mit sauren Kondensationsmitteln behandelt. Das gelbe chlorhaltige 1.2.5.6-Diphtaloyl- naphtalin löst sich in konzentrierter Schwe felsäure rotorange, gibt eine braune Küpe und schmilzt über 400 . Das chlorhaltige 1.2.5.6-Diphtaloylnaphtalin soll als Zwischen produkt für Farbstoffe dienen. PATENT CLAIM: Process for the preparation of a chlorine-containing 1.2.5.6-Diphtaloylnaphtalins, characterized by that one 2'.2 "-Dinitrilo - 5 '. 5" - dichloro -1. 5 - dibenzoylnaphthalene treated with acidic condensing agents. The yellow, chlorine-containing 1.2.5.6-diphtaloylnaphthalene dissolves in concentrated sulfuric acid red-orange, gives a brown vat and melts over 400. The chlorine-containing 1.2.5.6-Diphtaloylnaphtalin is to serve as an intermediate for dyes. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als Kondensa- tionsmittel konzentrierte Schwefelsäure ver wendet. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that concentrated sulfuric acid is used as the condensing agent.
CH151866D 1929-05-03 1930-05-02 Process for the preparation of a chlorine-containing 1.2.5.6-diphtaloylnaphthalene. CH151866A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE151866X 1929-05-03
CH149692T 1930-05-02

Publications (1)

Publication Number Publication Date
CH151866A true CH151866A (en) 1931-12-31

Family

ID=25715461

Family Applications (1)

Application Number Title Priority Date Filing Date
CH151866D CH151866A (en) 1929-05-03 1930-05-02 Process for the preparation of a chlorine-containing 1.2.5.6-diphtaloylnaphthalene.

Country Status (1)

Country Link
CH (1) CH151866A (en)

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