CH222978A - Process for the preparation of a mixed urea with a solubilizing group. - Google Patents

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

Info

Publication number
CH222978A
CH222978A CH222978DA CH222978A CH 222978 A CH222978 A CH 222978A CH 222978D A CH222978D A CH 222978DA CH 222978 A CH222978 A CH 222978A
Authority
CH
Switzerland
Prior art keywords
preparation
solubilizing group
mixed urea
mixed
water
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 CH222978A publication Critical patent/CH222978A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/02—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof
    • C07C303/22—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of sulfonic acids or halides thereof from sulfonic acids, by reactions not involving the formation of sulfo or halosulfonyl groups; from sulfonic halides by reactions not involving the formation of halosulfonyl groups

Landscapes

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

Description

  

  Verfahren zur Herstellung eines gemischten Harnstoffes mit     löslichmachender    Gruppe.    Gegenstand der vorliegenden     Erfindung     ist ein Verfahren zur Herstellung eines ge  mischten Harnstoffes mit     löslichmachender     Gruppe. Das Verfahren ist dadurch gekenn  zeichnet,     dass    man     4,4'-Dichlor-2'-sulfodi-          phenyläther-2-0-phenyl-urethan    in Gegen  wart von Wasser mit     4-Chlor-2-aminophenol     umsetzt.  



  Der erhaltene gemischte Harnstoff ist neu.  Er bildet farblose Kristalle, die in Wasser  löslich sind. Er .soll als Zwischenprodukt zur  Herstellung von Farbstoffen Verwendung  finden.  



       Beispiel:     24 g     kristallisiertes        4,4'-Dichl.or-2'-sulfo-          diphenyläther-2-0-phenyl-urethan        PhO        Mol)     werden mit 10 g     kristallisiertem    Natrium  acetat, 16 g     4-Chlor-2-aminophenol    und  400 cm' Wasser unter     gutem        Rühren    längere  Zeit auf etwa 60   C erwärmt. Dann ver  setzt man tropfenweise mit 14 cm'     konz.       Salzsäure, saugt ab und wäscht mit Wasser  nach.

   Man erhält so in fast     quantitativer     Ausbeute den     gemischten    Harnstoff als Pul  ver, das durch dunkel gefärbte,     alkaliunlös-          liche    Körper verunreinigt ist. Durch Um  kristallisieren aus verdünntem Äthanol kann  es     gereinigt    werden. Man erhält dann den ge  mischten Harnstoff als farblose Kristalle.



  Process for the preparation of a mixed urea having a solubilizing group. The present invention relates to a process for the preparation of a mixed urea having a solubilizing group. The process is characterized in that 4,4'-dichloro-2'-sulfodiphenyl ether-2-0-phenyl-urethane is reacted with 4-chloro-2-aminophenol in the presence of water.



  The mixed urea obtained is new. It forms colorless crystals that are soluble in water. It should be used as an intermediate product in the manufacture of dyes.



       Example: 24 g of crystallized 4,4'-dichloro-2'-sulfodiphenyl ether-2-0-phenyl-urethane PhO Mol) are mixed with 10 g of crystallized sodium acetate, 16 g of 4-chloro-2-aminophenol and 400 g cm 'of water heated to about 60 C for a long time while stirring well. Then one sets drop by drop with 14 cm 'conc. Hydrochloric acid, sucks off and washes with water.

   The mixed urea is thus obtained in almost quantitative yield as a powder which is contaminated by dark colored, alkali-insoluble bodies. It can be purified by recrystallizing it from dilute ethanol. The mixed urea is then obtained as colorless crystals.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines ge mischten Harnstoffes mit löslichmachender Gruppe, dadurch gekennzeichnet, dass man das 4,4'-Dichlor - 2'- sulfodiphenyläther - 2 - 0- phenyl-urethan in Gegenwart von Wasser mit 4-Chlo-r-2-aminophenol umsetzt. Der erhaltene gemischte Harnstoff bildet farblose Kristalle, die in Wasser löslich sind. PATENT CLAIM: A process for the preparation of a mixed urea with a solubilizing group, characterized in that the 4,4'-dichloro - 2'-sulfodiphenyl ether - 2 - 0-phenyl urethane in the presence of water with 4-chloro-r-2 -aminophenol converts. The mixed urea obtained forms colorless crystals which are soluble in water.
CH222978D 1938-11-11 1939-11-02 Process for the preparation of a mixed urea with a solubilizing group. CH222978A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE222978X 1938-11-11
CH216163T 1939-11-02

Publications (1)

Publication Number Publication Date
CH222978A true CH222978A (en) 1942-08-15

Family

ID=25725818

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222978D CH222978A (en) 1938-11-11 1939-11-02 Process for the preparation of a mixed urea with a solubilizing group.

Country Status (1)

Country Link
CH (1) CH222978A (en)

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