CH304982A - Process for the production of a condensation product. - Google Patents

Process for the production of a condensation product.

Info

Publication number
CH304982A
CH304982A CH304982DA CH304982A CH 304982 A CH304982 A CH 304982A CH 304982D A CH304982D A CH 304982DA CH 304982 A CH304982 A CH 304982A
Authority
CH
Switzerland
Prior art keywords
condensation product
chloro
production
chlorophenoxy
treated
Prior art date
Application number
Other languages
German (de)
Inventor
Ag Variapat
Original Assignee
Ag Variapat
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 Ag Variapat filed Critical Ag Variapat
Publication of CH304982A publication Critical patent/CH304982A/en

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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
    • C07C309/41Sulfonic 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
    • C07C309/42Sulfonic 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 Herstellung eines Kondensationsproduktes.



     Gegensta. nd    des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Kondensationsproduktes der wahrscheinlichen Formel
EMI1.1     
 dadureh gekennzeichnet, dass man N-2- (p   Chlorphenoxy)-5-chlor-phenyl-N'-2-chlor-5-tri-      fluormethyl-phenyl-harnstoff    mit einem Sulfonierungsmittel behandelt und die entstandene Sulfonsäure mit einer Natriumverbindung in das Natriumsalz überführt.



   Als Sulfonierungsmittel kommen zum Beispiel in Frage : Oleum, konz. Schwefelsäure oder Chlorsulfonsäure.



   Beispielsweise lässt man auf den aus 2 Clilor-5-trifluormethyl-phenyl-isocyanat und    2- (p-Chlor-phenoxy)-5-chlor-anilin erhaltenen    N-2- (p-Chlorphenoxy)-5-chlorphenyl-N'-2  chlor-5-trifluormethyl-phenyl-harnstoff    (F : 208-210) Schwefelsäuremonohydrat zwischen   -7      und- ;-12  einwirken. Hierbei    wird ein Sulfonsäurerest eingeführt ; nach Neutralisation mit konz. Natronlauge entsteht wahr  scheinlich    die Verbindung der obigen Formel.



   Statt Sehwefelsäuremonohydrat kann man auch Oleum oder Chlorsulfonsäure verwenden.



  Bei letzterem arbeitet man vorzugsweise in einem Losungsmittel, wie z. B. Nitrobenzol.



  Das neue Kondensationsprodukt bildet ein helles, in heissem Wasser klar   losliches      Eri-    stallpulver, das als   Mottenschutzmittel    verwendet werden kann.



   Beispiel :
100 g   Schwefelsäuremonohydratwerdenauf      --7     gekühlt und unter Rühren langsam 20 g N-2- (p-Chlorphenoxy)-5-chlor-phenyl-N'-2  chlor-5-      (trifluormethyl)-phenyl-harnstoff    eingetragen, so dass die Temperatur nicht über   + 12     steigt. Nach dem Eintragen wird noeh ungefähr eine Stunde bei dieser Temperatur weitergerührt, bis eine Probe des Reaktionsgemisehes inwarmerverd. Laugeklar   loslichist.   



   Darauf wird das Reaktionsgemisch auf Eis gegossen und mit konz. Natronlauge schwach a, lkalisch gestellt, wobei die Verbindung als   il    ausfällt. Die überstehende Lösung wird vom   bl    abdekantiert und der   Rüekstand, i    3000   em3    95 igem Wasser gelöst, mit wenig Tierkohle filtriert und mit 250 cm3 gesättigter Kochsalzlösung ausgesalzen. Ausbeute : 18 g. 



   Das neue Kondensationsprodukt bildet nach dem Trocknen und Mahlen ein helles, in heissem Wasser klar lösliches kristallines   Pul-    ver.



  



   Process for the production of a condensation product.



     Object nd of the present patent is a process for making a condensation product of the likely formula
EMI1.1
 characterized by the fact that N-2- (p-chlorophenoxy) -5-chlorophenyl-N'-2-chloro-5-trifluoromethyl-phenylurea is treated with a sulfonating agent and the sulfonic acid formed is converted into the sodium salt with a sodium compound convicted.



   Suitable sulfonating agents are, for example: oleum, conc. Sulfuric acid or chlorosulfonic acid.



   For example, the N-2- (p-chlorophenoxy) -5-chlorophenyl-N'- obtained from 2 clilor-5-trifluoromethyl-phenyl-isocyanate and 2- (p-chlorophenoxy) -5-chloro-aniline 2 chloro-5-trifluoromethyl-phenyl-urea (F: 208-210) sulfuric acid monohydrate between -7 and-; -12 act. A sulfonic acid residue is introduced here; after neutralization with conc. Sodium hydroxide solution is likely to form the compound of the above formula.



   Instead of sulfuric acid monohydrate, oleum or chlorosulfonic acid can also be used.



  In the latter one works preferably in a solvent, such as. B. nitrobenzene.



  The new condensation product forms a light-colored, clear-dissolving erisal powder in hot water that can be used as a moth repellent.



   Example:
100 g of sulfuric acid monohydrate are cooled to -7 and, with stirring, 20 g of N-2- (p-chlorophenoxy) -5-chlorophenyl-N'-2 chloro-5- (trifluoromethyl) -phenyl-urea are slowly added, so that the temperature does not rise above +12. After the addition, stirring is continued for about an hour at this temperature until a sample of the reaction mixture warms up. Clearly soluble in lye.



   The reaction mixture is then poured onto ice and acidified with conc. Sodium hydroxide solution weakly a, alkaline, the compound precipitating as il. The supernatant solution is decanted from the bl and the residue is dissolved in 3000 cubic meters of 95% water, filtered with a little animal charcoal and salted out with 250 cm3 of saturated saline solution. Yield: 18 g.



   After drying and grinding, the new condensation product forms a pale crystalline powder that is clearly soluble in hot water.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung eines Konden sationsproduktes der wahrscheinlichen Formel EMI2.1 dadurch gekennzeichnet, dass man N-2- (p Chlorphenoxy)-5-chlor-phenyl-N'-2-chlor-5-tri- fluormethyl-phenyl-harnstoff mit einem Sul fonierungsmittel behandelt und die entstandene Sulfonsäure mit einer Natriumverbin- dung in das Natriumsalz überführt. PATENT CLAIM: Process for the preparation of a condensation product of the probable formula EMI2.1 characterized in that N-2- (p-chlorophenoxy) -5-chloro-phenyl-N'-2-chloro-5-trifluoromethyl-phenylurea is treated with a sulphonating agent and the sulphonic acid formed is treated with a sodium compound converted into the sodium salt. Das neue Kondensationsprodukt bildet ein helles, in heissem Wasser klar lösliehes kristallines Pulver, das als Mottenschutzmittel verwendet werden kann. The new condensation product forms a pale crystalline powder that dissolves clearly in hot water and can be used as a moth repellent.
CH304982D 1950-04-29 1950-04-29 Process for the production of a condensation product. CH304982A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH299707T 1950-04-29
CH304982T 1950-04-29

Publications (1)

Publication Number Publication Date
CH304982A true CH304982A (en) 1955-01-31

Family

ID=25734097

Family Applications (1)

Application Number Title Priority Date Filing Date
CH304982D CH304982A (en) 1950-04-29 1950-04-29 Process for the production of a condensation product.

Country Status (1)

Country Link
CH (1) CH304982A (en)

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