CH210971A - Process for the preparation of a urea derivative. - Google Patents

Process for the preparation of a urea derivative.

Info

Publication number
CH210971A
CH210971A CH210971DA CH210971A CH 210971 A CH210971 A CH 210971A CH 210971D A CH210971D A CH 210971DA CH 210971 A CH210971 A CH 210971A
Authority
CH
Switzerland
Prior art keywords
urea derivative
preparation
water
derivative
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
Application filed by Geigy Ag J R filed Critical Geigy Ag J R
Publication of CH210971A publication Critical patent/CH210971A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01—Sulfonic acids
    • C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C309/41—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing singly-bound oxygen atoms bound to the carbon skeleton
    • C07C309/42—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing singly-bound oxygen atoms bound to the carbon skeleton having the sulfo groups bound to carbon atoms of non-condensed six-membered aromatic rings

Description

  

  Verfahren zur Darstellung eines     Harnstoffderivates.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines Harn  stoffderivates der Formel  
EMI0001.0002     
    dadurch gekennzeichnet, dass man     4-Amino-          2,4'-        dichlor-    5'-     methyl        -1,1'-diphenyläther-        2'-          sulfonsäure    mit     Phosgen    umsetzt. Das neue       Harnstoffderivat    bildet als     Natriumsalz    ein  weisses, gut wasserlösliches Pulver, das sich  zur Verwendung als Mottenschutzmittel eignet.

      <I>Beispiel:</I>  20 Teile     4-Amino-2,4'-dichlor-5'-methyl-          1,1'-diphenyläther-2'-sulfonsäure    werden in  200 Teilen Wasser mit der nötigen Menge  10     o/oiger        Sodalösung    in Lösung gebracht. Zu  dieser Lösung gibt man 30 Teile kristalli  siertes     Natriumacetat    hinzu .und leitet bei  40-50o C     Phosgen    ein, bis eine Probe kein  freies Amin mehr anzeigt. Das abgeschiedene  Produkt wird mit Soda genau neutralisiert  und das     Natriumsalz    des neuen Harnstoff  derivates durch Zusatz von gesättigter Koch  salzlösung abgeschieden.

   Es wird nach dem  Abtrennen, Trocknen und Mahlen als weisses,  schön kristallines, 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
EMI0001.0002
    characterized in that 4-amino-2,4'-dichloro-5'-methyl -1,1'-diphenyl ether-2'-sulfonic acid is reacted with phosgene. The new urea derivative forms a white, water-soluble powder as a sodium salt, which is suitable for use as a moth repellent.

      <I> Example: </I> 20 parts of 4-amino-2,4'-dichloro-5'-methyl-1,1'-diphenyl ether-2'-sulfonic acid are dissolved in 200 parts of water in the required amount of 10% oiger soda solution brought into solution. 30 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 deposited product is precisely neutralized with soda and the sodium salt of the new urea derivative is deposited by adding saturated sodium chloride solution.

   After separating, drying and grinding it is obtained as a white, nicely crystalline, water-soluble powder. The yield is quantitative.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Harn stoffderivates der Formel EMI0002.0001 dadurch gekennzeichnet, dass man 4-Amino- 2,4'- dichlor- 5'- methyl -1,1'- diphenyläther-2'- sulfonsäure mit Phosgen umsetzt. Das neue Harnatoffderivat bildet als Natriumsalz ein weisses, gut wasserlösliches Pulver, das sich zur Verwendung als Mottenschutzmittel eignet. PATENT CLAIM: Process for the production of a urea derivative of the formula EMI0002.0001 characterized in that 4-amino-2,4'-dichloro-5'-methyl -1,1'-diphenyl ether-2'-sulfonic acid is reacted with phosgene. As a sodium salt, the new uranium derivative forms a white, water-soluble powder that is suitable for use as a moth repellent.
CH210971D 1938-06-16 1938-06-16 Process for the preparation of a urea derivative. CH210971A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH536047X 1938-06-16
CH210971T 1938-06-16

Publications (1)

Publication Number Publication Date
CH210971A true CH210971A (en) 1940-08-15

Family

ID=25724960

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210971D CH210971A (en) 1938-06-16 1938-06-16 Process for the preparation of a urea derivative.

Country Status (1)

Country Link
CH (1) CH210971A (en)

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