CH210964A - Process for the preparation of a urea derivative. - Google Patents

Process for the preparation of a urea derivative.

Info

Publication number
CH210964A
CH210964A CH210964DA CH210964A CH 210964 A CH210964 A CH 210964A CH 210964D A CH210964D A CH 210964DA CH 210964 A CH210964 A CH 210964A
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 CH210964A publication Critical patent/CH210964A/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
    • C07C309/02—Sulfonic acids having sulfo groups bound to acyclic carbon atoms
    • C07C309/24—Sulfonic acids having sulfo groups bound to acyclic carbon atoms of a carbon skeleton containing 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     Harnstoifderivates.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines Harn  stoffderivates der Formel  
EMI0001.0003     
    dadurch gekennzeichnet, dass man     2-Amino-          4,4'-        dichlor-        5'-meChyl-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     2-Amino-4,4'-dichlor-5'-methyl-          1,1'-diphenyläther-2'-sulfonsäure    werden in  200 Teilen Wasser gelöst und mit 30 g kri  stallisiertem     Natriumacetat    versetzt. In diese  Lösung leitet man bei 40-50   C     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 weisses,  gut wasserlösliches Pulver erhalten. Die Aus  beute 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
EMI0001.0003
    characterized in that 2-amino-4,4'-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 2-amino-4,4'-dichloro-5'-methyl-1,1'-diphenyl ether-2'-sulfonic acid are dissolved in 200 parts of water and crystallized with 30 g Sodium acetate added. Phosgene is passed into this solution 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 deposited by adding sodium chloride. It is obtained as a white, readily water-soluble powder after separation, drying and grinding. The yield is quantitative.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Harnstoff derivates der Formel EMI0001.0019 dadurch gekennzeichnet, dass man 2-Amino- 4,4'- 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. PATENT CLAIM: Process for the production of a urea derivative of the formula EMI0001.0019 characterized in that 2-amino-4,4'-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.
CH210964D 1938-06-16 1938-06-16 Process for the preparation of a urea derivative. CH210964A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH536047X 1938-06-16
CH210964T 1938-06-16

Publications (1)

Publication Number Publication Date
CH210964A true CH210964A (en) 1940-08-15

Family

ID=25724953

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210964D CH210964A (en) 1938-06-16 1938-06-16 Process for the preparation of a urea derivative.

Country Status (1)

Country Link
CH (1) CH210964A (en)

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