CH210969A - Process for the preparation of a urea derivative. - Google Patents

Process for the preparation of a urea derivative.

Info

Publication number
CH210969A
CH210969A CH210969DA CH210969A CH 210969 A CH210969 A CH 210969A CH 210969D A CH210969D A CH 210969DA CH 210969 A CH210969 A CH 210969A
Authority
CH
Switzerland
Prior art keywords
urea derivative
preparation
water
phosgene
dichloro
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 CH210969A publication Critical patent/CH210969A/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

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

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-1,1'-diphenyläther-        2'-sulfonsäure     mit     Phosgen    umsetzt. Das neue Harnstoff  derivat bildet als     Natriumsalz    ein helles, gut  wasserlösliches Pulver, das sich zur Verwen  dung als Mottenschutzmittel eignet.

      <I>Beispiel:</I>    20 Teile     4-Amino-2,4'-dichlor-1,1'-diphenyl-          äther-2'-sulfonsäure    werden in 200 Teilen  Wasser mit der nötigen Menge 10     o/oiger          Sodalösung    in Lösung gebracht.     Hiezu    gibt  man 30 Teile kristallisiertes     Natriumacetat     hinzu und leitet bei 40-50   C     Phosgen    ein,  bis eine Probe kein freies Amin mehr an-    zeigt. Hierauf wird das     Natriumsalz    des neuen       Harnstoffderivates    durch Zusatz von Kochsalz  abgeschieden. Es wird nach dem Abtrennen,  Trocknen und Mahlen als helles, gut wasser  lösliches 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-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> 20 parts of 4-amino-2,4'-dichloro-1,1'-diphenyl ether-2'-sulfonic acid are dissolved in 200 parts of water with the necessary amount of 10% sodium carbonate solution Solution brought. To this end, 30 parts of crystallized sodium acetate are added and phosgene is passed in at 40-50 ° C. until a sample no longer shows any free amine. The sodium salt of the new urea derivative is then deposited by adding common salt. It is obtained as a pale, readily water-soluble powder after separating off, drying and grinding. The yield is quantitative.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Harn stoffderivates der Formel EMI0001.0018 dadurch gekennzeichnet, dass man 4-Amino- 2,4'-dichlor-1,1'-diphenyläther-2'-sulfonsäure mit Phosgen umsetzt. Das neue Harnstoff derivat bildet als Natriumsalz ein helles, gut wasserlösliches Pulver, das sich zur Verwen dung als Mottenschutzmittel eignet. PATENT CLAIM: Process for the production of a urea derivative of the formula EMI0001.0018 characterized in that 4-amino-2,4'-dichloro-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.
CH210969D 1938-06-16 1938-06-16 Process for the preparation of a urea derivative. CH210969A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH536047X 1938-06-16
CH210969T 1938-06-16

Publications (1)

Publication Number Publication Date
CH210969A true CH210969A (en) 1940-08-15

Family

ID=25724958

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210969D CH210969A (en) 1938-06-16 1938-06-16 Process for the preparation of a urea derivative.

Country Status (1)

Country Link
CH (1) CH210969A (en)

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