CH210965A - Process for the preparation of a urea derivative. - Google Patents

Process for the preparation of a urea derivative.

Info

Publication number
CH210965A
CH210965A CH210965DA CH210965A CH 210965 A CH210965 A CH 210965A CH 210965D A CH210965D A CH 210965DA CH 210965 A CH210965 A CH 210965A
Authority
CH
Switzerland
Prior art keywords
urea derivative
preparation
water
trichloro
phosgene
Prior art date
Application number
Other languages
German (de)
Inventor
A-G J R Geigy
Original Assignee
Geigy Ag J R
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
Priority claimed from CH536047X external-priority
Application filed by Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH210965A publication Critical patent/CH210965A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01Sulfonic acids
    • C07C309/28Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C309/45Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton
    • C07C309/51Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing nitrogen atoms, not being part of nitro or nitroso groups, bound to the carbon skeleton at least one of the nitrogen atoms being part of any of the groups, X being a hetero atom, Y being any atom

Description

  

      Verfahren    zur Darstellung eines     Harnstoffderivates.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur     Herstellung    eines Harn  stoffderivates der Formel  
EMI0001.0004     
    dadurch gekennzeichnet, dass man     4-Amino-          2',    4', 5'-     trichlor        -1,1'-        diphenyläther-    2     -sulfon-          säure    mit     Phosgen    umsetzt. Das neue Harn  stoffderivat bildet als     Natriumsalz    ein helles,  gut wasserlösliches Pulver, das sich zur Ver  wendung als Mottenschutzmittel eignet.  



  <I>Beispiel:</I>  15 Teile     4-Amino-2',    4',     5'-trichlor-1,1'-di-          phenyläther-2-sulfonsäure    werden in 250 Tei  len Wasser gelöst und mit der nötigen Menge  10     %iger        Sodalösung    in Lösung gebracht. In  diese Lösung gibt man 25 Teile kristalli  siertes     Natriumacetat    hinzu und leitet bei  40-50 o<B>0</B>     Phosgen    ein, bis eine Probe kein    freies Amin mehr anzeigt. Hierauf wird die  Lösung mittels Soda genau neutralisiert und  das     Natriumsalz    des neuen     Harnstoffderivates     durch-Zusatz von Kochsalz abgeschieden.

   Es  wird nach dem Abtrennen, Trocknen und  Mahlen als helles, gut wasserlösliches Pulver  erhalten. Die Ausbeute ist quantitativ.



      Process for the preparation of a urea derivative. The subject of the present patent is a process for the preparation of a urea derivative of the formula
EMI0001.0004
    characterized in that 4-amino-2 ', 4', 5'-trichloro -1,1'-diphenyl ether-2-sulfonic acid is reacted with phosgene. As a sodium salt, the new urea derivative forms a light-colored, water-soluble powder that is suitable for use as a moth repellent.



  <I> Example: </I> 15 parts of 4-amino-2 ', 4', 5'-trichloro-1,1'-diphenyl ether-2-sulfonic acid are dissolved in 250 parts of water and added in the required amount 10% soda solution brought into solution. 25 parts of crystallized sodium acetate are added to this solution and phosgene is passed in at 40-50 ° C. until a sample no longer shows any free amine. The solution is then precisely neutralized using soda and the sodium salt of the new urea derivative is separated out by adding sodium chloride.

   It is obtained as a pale, readily water-soluble powder after it has been separated off, dried and ground. The yield is quantitative.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Harn stoff derivates der Formel EMI0001.0025 dadurch gekennzeichnet, dass man 4-Amino- 2', 4', 5'- trichlor -1,1'- diphenyläther- 2 -sulfon- säure mit Phosgen umsetzt. Das neue Harn stoffderivat bildet als Natriumsalz ein helles, gut wasserlösliches Pulver, das sich zur Ver wendung als Mottenschutzmittel eignet. PATENT CLAIM: Process for the production of a urea derivative of the formula EMI0001.0025 characterized in that 4-amino-2 ', 4', 5'-trichloro -1,1'-diphenyl ether-2-sulfonic acid is reacted with phosgene. As a sodium salt, the new urea derivative forms a light-colored, water-soluble powder that is suitable for use as a moth repellent.
CH210965D 1938-06-16 1938-06-16 Process for the preparation of a urea derivative. CH210965A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH536047X 1938-06-16
CH210965T 1938-06-16

Publications (1)

Publication Number Publication Date
CH210965A true CH210965A (en) 1940-08-15

Family

ID=25724954

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210965D CH210965A (en) 1938-06-16 1938-06-16 Process for the preparation of a urea derivative.

Country Status (1)

Country Link
CH (1) CH210965A (en)

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