CH175865A - Process for preparing a 1,8-naphthalenedicarboximide compound. - Google Patents

Process for preparing a 1,8-naphthalenedicarboximide compound.

Info

Publication number
CH175865A
CH175865A CH175865DA CH175865A CH 175865 A CH175865 A CH 175865A CH 175865D A CH175865D A CH 175865DA CH 175865 A CH175865 A CH 175865A
Authority
CH
Switzerland
Prior art keywords
compound
naphthalenedicarboximide
pressure vessel
dissolves
preparing
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 CH175865A publication Critical patent/CH175865A/en

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  • Indole Compounds (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung einer     1.8-Naphthal:ndica.rbonsi.tureimidverhindung.       Gegenstand vorliegenden Patentes ist ein  Verfahren zur Darstellung einer 1 .     8-Naph-          thalindicarbonsäureimidverbindung,        welches     dadurch gekennzeichnet ist, dass man     4-Sulfo-          l    .     8-naphthalindicarbonsäure    mit     Cyclohexyl-          amin    im     Druclzgefäss    bei erhöhter     Tempera-          1in,    behandelt.

      <I>Beispiel:</I>  Man erhitzt einen Teil     4-Sulfo-1    .     8-naph-          thalindicarbonsäure    mit 8 Teilen einer wässe  rigen 65 %     igen        Cyclohexylaminlösung    etwa  5 Stunden lang bei etwa 150 bis<B>160'</B> im  Druckgefäss. Man erhält so das hellgelb ge  färbte     4-Cyclohexylaminonaphthalcyclohexyl-          imid    von folgender Formel:  
EMI0001.0020     
    Es löst sich in organischen Lösungsmitteln  wie Äther, Alkohol, Eisessig, Essigester  leicht, und zwar mit gelber Farbe und grüner  Fluoreszenz. Ebenso löst es sich in konzen  trierter Schwefelsäure. In verdünnten Mine-           ralsäuren    ist es unlöslich.

   Die Verbindung  obiger Formel ist ein neuer Stoff, der zur  Darstellung von Farbstoffen Verwendung  finden soll. Sie färbt     Acidylzellulose        etc.    in  äusserst klaren     _elben        Tönen.  



  Process for the preparation of a 1.8-naphthalene: ndica.rbonsi.tureimidverhverbindungen. The subject of the present patent is a method for representing a 1st 8-naphthalene dicarboximide compound, which is characterized in that 4-sulfol. 8-naphthalenedicarboxylic acid treated with cyclohexylamine in a pressure vessel at elevated temperature.

      <I> Example: </I> Part of 4-sulfo-1 is heated. 8-naphthalene dicarboxylic acid with 8 parts of an aqueous 65% strength cyclohexylamine solution for about 5 hours at about 150 to 160 'in a pressure vessel. This gives the pale yellow colored 4-cyclohexylaminonaphthalcyclohexyl imide of the following formula:
EMI0001.0020
    It dissolves easily in organic solvents such as ether, alcohol, glacial acetic acid, ethyl acetate, with a yellow color and green fluorescence. It also dissolves in concentrated sulfuric acid. It is insoluble in dilute mineral acids.

   The compound of the above formula is a new substance that is to be used to represent dyes. It colors acidyl cellulose etc. in extremely clear yellow tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer 1.8- Naphthalindicarbonsäureimidverbindung, da durch gekennzeichnet, dass man 4-Sulfo-1 . 8- naphthalindicarbonsäure mit Cyclohegylamin im Druckgefäss bei erhöhter Temperatur be handelt. Das so erhaltene 4-Cyclohegylaminonaph- thalcyclohegylimid löst sich in organischen Lösungsmitteln wie Äther, Alkohol, Eisessig. Essigester leicht, und zwar mit gelber Farbe und grüner Fluoreszenz. PATENT CLAIM: Process for the preparation of a 1.8-naphthalenedicarboximide compound, characterized in that 4-sulfo-1. 8-naphthalenedicarboxylic acid treated with cyclohegylamine in a pressure vessel at an elevated temperature. The 4-Cyclohegylaminonaph- thalcyclohegylimid thus obtained dissolves in organic solvents such as ether, alcohol, glacial acetic acid. Ethyl acetate light, with a yellow color and green fluorescence. Ebenso löst es sich in konzentrierter Schwefelsäure. In verdünn- ten Mineralsäuren ist es unlöslich. Es färbt Acidylzellulose ete. in äusserst klaren gelben Tönen. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Reaktion durch Erhitzen während etwa 5 Stunden bei etwa 150 bis 160 im Druckgefäss bewirkt. It also dissolves in concentrated sulfuric acid. It is insoluble in dilute mineral acids. It stains acidyl cellulose ete. in extremely clear yellow tones. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the reaction is brought about by heating for about 5 hours at about 150 to 160 in a pressure vessel.
CH175865D 1932-03-24 1933-03-23 Process for preparing a 1,8-naphthalenedicarboximide compound. CH175865A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE175865X 1932-03-24
CH168138T 1933-03-23

Publications (1)

Publication Number Publication Date
CH175865A true CH175865A (en) 1935-03-15

Family

ID=25718505

Family Applications (1)

Application Number Title Priority Date Filing Date
CH175865D CH175865A (en) 1932-03-24 1933-03-23 Process for preparing a 1,8-naphthalenedicarboximide compound.

Country Status (1)

Country Link
CH (1) CH175865A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235045A (en) * 1992-03-19 1993-08-10 Microbiomed Corporation Non-azo naphthalimide dyes
US5766600A (en) * 1993-08-09 1998-06-16 Microbiomed Corporation Non-azo naphtalimide dyes and uses for same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5235045A (en) * 1992-03-19 1993-08-10 Microbiomed Corporation Non-azo naphthalimide dyes
US5565551A (en) * 1992-03-19 1996-10-15 Microbiomed Corporation Non-azo naphthalimide dyes and uses for same
US5766600A (en) * 1993-08-09 1998-06-16 Microbiomed Corporation Non-azo naphtalimide dyes and uses for same

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