CH210967A - Process for the preparation of a urea derivative. - Google Patents

Process for the preparation of a urea derivative.

Info

Publication number
CH210967A
CH210967A CH210967DA CH210967A CH 210967 A CH210967 A CH 210967A CH 210967D A CH210967D A CH 210967DA CH 210967 A CH210967 A CH 210967A
Authority
CH
Switzerland
Prior art keywords
urea derivative
preparation
water
phosgene
pale
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
Priority to CH210967T priority Critical
Priority to CH536047X priority
Publication of CH210967A publication Critical patent/CH210967A/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     Iiarnstoffderivates.       Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines Harn  stoffderivates der Formel  
EMI0001.0002     
    dadurch gekennzeichnet, dass man     4-Amino-          4'-chlor-    3', 5'-     dimethyl    -1,1'-     diphenyläther-2-          sulfonsäure    mit     Phosgen    umsetzt. Das neue       Harnstoffderivat    bildet als     Natriumsalz    ein  helles, gut wasserlösliches Pulver, das sich zur  Verwendung als Mottenschutzmittel eignet.  



       Beispiel:     20 Teile     4-Amino-4'-chlor-3',        5'-dimethyl-          1,1'-diphenyläther-2-sulfonsäure    werden in  250 Teilen Wasser mit der nötigen Menge  10     o/oiger        Sodalösung    in Lösung gebracht. Zu  dieser Lösung gibt man 25 Teile kristalli  siertes     Natriumacetat    hinzu und leitet bei  40-50<B>0</B> C     Phosgen    ein, bis eine Probe kein    freies Amin mehr anzeigt. Hierauf wird 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 an intravenous substance 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-4'-chloro-3 ', 5'-dimethyl -1,1'-diphenyl ether-2-sulfonic acid is reacted with phosgene. The new urea derivative forms a pale, water-soluble powder as a sodium salt, which is suitable for use as a moth repellent.



       Example: 20 parts of 4-amino-4'-chloro-3 ', 5'-dimethyl-1,1'-diphenyl ether-2-sulfonic acid are dissolved in 250 parts of water with the necessary amount of 10% sodium carbonate 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 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 it has been separated off, dried and ground. The yield is quantitative.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Harn stoffderivates der Formel EMI0001.0021 dadurch gekennzeichnet, dass man 4-Amino- 4'-chlor-3', 5'-dimethyl-1,1'-diphenyläther-2- sulfonsäure mit Phosgen umsetzt. Das neue Harnstoffderivat bildet als Natriumsalz ein helles, gut wasserlösliches Pulver, das sich zur Verwendung als Mottenschutzmittel eignet. PATENT CLAIM: Process for the production of a urea derivative of the formula EMI0001.0021 characterized in that 4-amino-4'-chloro-3 ', 5'-dimethyl-1,1'-diphenyl ether-2-sulfonic acid is reacted with phosgene. The new urea derivative forms a pale, water-soluble powder as a sodium salt, which is suitable for use as a moth repellent.
CH210967D 1938-06-16 1938-06-16 Process for the preparation of a urea derivative. CH210967A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH210967T 1938-06-16
CH536047X 1938-06-16

Publications (1)

Publication Number Publication Date
CH210967A true CH210967A (en) 1940-08-15

Family

ID=25724956

Family Applications (1)

Application Number Title Priority Date Filing Date
CH210967D CH210967A (en) 1938-06-16 1938-06-16 Process for the preparation of a urea derivative.

Country Status (1)

Country Link
CH (1) CH210967A (en)

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