CH222975A - Process for the preparation of a mixed urea with solubilizing groups. - Google Patents

Process for the preparation of a mixed urea with solubilizing groups.

Info

Publication number
CH222975A
CH222975A CH222975DA CH222975A CH 222975 A CH222975 A CH 222975A CH 222975D A CH222975D A CH 222975DA CH 222975 A CH222975 A CH 222975A
Authority
CH
Switzerland
Prior art keywords
preparation
mixed urea
solubilizing groups
mixed
urea
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 CH222975A publication Critical patent/CH222975A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/18—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas
    • C07C273/1809—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas with formation of the N-C(O)-N moiety
    • C07C273/1818—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas with formation of the N-C(O)-N moiety from -N=C=O and XNR'R"
    • C07C273/1827—X being H

Landscapes

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

Description

  

      Verfahren    zur Herstellung eines gemischten Harnstoffes mit     löslichmachenden    Gruppen.         Gegenstand    der vorliegenden Erfindung  ist ein Verfahren zur Herstellung eines ge  mischten Harnstoffes mit     löslichmachenden     Gruppen. Das Verfahren ist dadurch gekenn  zeichnet, dass man 4 -     Nitro    - 2,2' -     disulfo-          stilben-4'-0-phenyl-urethan    in Gegenwart  von Wasser mit     5-Amino-2-ogy-benzoesäure     umsetzt.  



  Der erhaltene gemischte Harnstoff ist  neu. Er fällt in Form orangefarbener Kri  stalle an, die in Wasser mit gelber Farbe  löslich sind und soll als Zwischenprodukt zur  Herstellung von Farbstoffen Verwendung  finden.  



  <I>Beispiel:</I>  Eine     wässrigePaste    von     ';1Q        Mol        4-nitro-          stilben-4'    - 0     -phenyl-urethan-2,2'-disulf        onsau-          rem    Natrium wird mit 18,7 g     5-amino-2-o@gy-          benzoesaurem    Natrium mehrere Stunden auf  <B>10</B>   C erwärmt.

   Nach beendigter Reaktion    wird nach     Zusatz    von Kochsalz bei     soda-          alkaliseher    Reaktion der gemischte Harnstoff  aus     4-Nitro-4'-aminostilben-2,2'-disulfonsäure     und     5-Amino-2-oxybenzoe:säure        mit    sehr       guter        Ausbeute        in    orangefarbenen Kristallen       abgeschieden.  



      Process for the preparation of a mixed urea with solubilizing groups. The present invention relates to a process for the preparation of a mixed urea with solubilizing groups. The process is characterized in that 4-nitro-2,2'-disulpho-stilbene-4'-0-phenyl-urethane is reacted with 5-amino-2-ogy-benzoic acid in the presence of water.



  The mixed urea obtained is new. It falls in the form of orange crystals that are soluble in water with a yellow color and are intended to be used as an intermediate in the production of dyes.



  <I> Example: </I> An aqueous paste of '; 1Q mol of 4-nitro-stilbene-4' - 0-phenyl-urethane-2,2'-disulfonate is acidic with 18.7 g of 5-amino -2-o @ gy- benzoic acid sodium heated to <B> 10 </B> C for several hours.

   After the reaction is complete, after adding sodium chloride to a soda-alkaline reaction, the mixed urea of 4-nitro-4'-aminostilbene-2,2'-disulfonic acid and 5-amino-2-oxybenzoic acid is deposited in very good yield in orange crystals .

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines gemisch ten Harnstoffes mit löslichmaehenden Grup pen, dadurch gekennzeichnet, dass man 4- Nitro - 2,2' - disulf o- stilben-4'-0-phenyl-ure- than in Gegenwart von Wasser mit 5-Amino- 2-oxybenzoesäure umsetzt. Der erhaltene gemischte Harnstoff fällt in Form orangefarbener Kristalle an, die in Wasser mit gelber Farbe löslich sind. PATENT CLAIM: Process for the production of a mixed urea with soluble groups, characterized in that 4-nitro-2,2'-disulfo-stilbene-4'-0-phenyl-urethane in the presence of water with 5- Reacts amino-2-oxybenzoic acid. The mixed urea obtained is obtained in the form of orange crystals which are soluble in water with a yellow color.
CH222975D 1938-11-11 1939-11-02 Process for the preparation of a mixed urea with solubilizing groups. CH222975A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE222975X 1938-11-11
CH216163T 1939-11-02

Publications (1)

Publication Number Publication Date
CH222975A true CH222975A (en) 1942-08-15

Family

ID=25725815

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222975D CH222975A (en) 1938-11-11 1939-11-02 Process for the preparation of a mixed urea with solubilizing groups.

Country Status (1)

Country Link
CH (1) CH222975A (en)

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