CH305313A

CH305313A - Process for the production of a condensation product.

Info

Publication number: CH305313A
Authority: CH
Inventors: Ag Variapat
Original assignee: Ag Variapat
Priority date: 1950-04-29
Filing date: 1950-04-29
Publication date: 1955-02-15

Description

  

  



  Verfahren zur Herstellung eines Kondensationsproduktes.



   Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung   eines Konden-    sationsproduktes der   wahrscheinlichen    Formel
EMI1.1     
 dadurch gekennzeichnet, dass man den zum Beispiel aus   2-Chlor-1,      1'-diphenylather    und 3-Trifluormethyl-4-chlor-6-sulfo-anilin hergestellten   N-3-Trifluormethyl-4-chlor-6-sulfo-    phenyl-N'-4-phenoxy-5-chlor-phenyl-harnstoff chloriert und das Chlorierungsprodukt mit einer Natriumverbindung in das Natriumsalz überführt.



   Als Chlorierungsmittel kommen beispielsweise Chlorgas (mit oder ohne Katalysator),   Chlorkalk,    unterchlorige Säure usw. in Frage.



   Durch die Chlorierung, z. B. mit Chlor in Eisessig, wird ein Atom Chlor in das Molekül eingeführt, wobei wahrscheinlich die Verbindung der obigen Formel entsteht. Diese bildet ein helles, in heissem Wasser klar   losliches    kristallines Pulver, das als   Mottenschutzmittel    verwendet werden kann.



   Beispiel :
100 Teile des N-3-Trifluormethyl-4-chlor   6-sulfo-phenyl-N'-4-phenoxy-5-chlor-phenyl-    harnstoffes werden in 600 Teilen Eisessig gelöst und bei etwa   10     während einiger Stunden mit Chlorgas gesättigt.



   Der Eisessig wird zum grössten Teil abdestilliert und der Rückstand mit etwa   25 /oiger    Natronlauge schwach alkalisch gestellt, wobei die Verbindung ölig ausfällt. Die überstehende Lösung wird abdekantiert und das Öl in 8000 Teilen Wasser von   95     gelöst und mit wenig Kohle filtriert. Durch Zusatz von gesättigter Kochsalzlösung und Stehenlassen über Nacht wird die Verbindung in befriedigender Reinheit erhalten. Diese bildet ein helles, in heissem Wasser klar   losliches    kristallines Pulver.  



   PATENTANSPRUCH : Verfahren zur Herstellung eines Kondensationsproduktes der   wahrscheinlichen    Formel
EMI1.2     
 

**WARNUNG** Ende DESC Feld konnte Anfang CLMS uberlappen**.





  



  Process for the production of a condensation product.



   The subject of the present patent is a process for the production of a condensation product of the probable formula
EMI1.1
 characterized in that the N-3-trifluoromethyl-4-chloro-6-sulfophenyl produced for example from 2-chloro-1, 1'-diphenyl ether and 3-trifluoromethyl-4-chloro-6-sulfo-aniline N'-4-phenoxy-5-chlorophenyl urea is chlorinated and the chlorination product is converted into the sodium salt with a sodium compound.



   Chlorine gas (with or without a catalyst), chlorinated lime, hypochlorous acid, etc. can be used as chlorinating agents.



   By chlorination, e.g. B. with chlorine in glacial acetic acid, an atom of chlorine is introduced into the molecule, which is likely to form the compound of the above formula. This forms a light, crystalline powder that is clearly soluble in hot water, which can be used as a moth repellent.



   Example:
100 parts of the N-3-trifluoromethyl-4-chloro-6-sulfo-phenyl-N'-4-phenoxy-5-chloro-phenylurea are dissolved in 600 parts of glacial acetic acid and saturated with chlorine gas at about 10 hours.



   Most of the glacial acetic acid is distilled off and the residue is made slightly alkaline with about 25% sodium hydroxide solution, the compound precipitating as an oily product. The supernatant solution is decanted off and the oil is dissolved in 8000 parts of 95 water and filtered with a little charcoal. The compound is obtained in satisfactory purity by adding saturated saline solution and leaving it to stand overnight. This forms a pale crystalline powder that is clearly soluble in hot water.



   PATENT CLAIM: Process for the preparation of a condensation product of the probable formula
EMI1.2
 

** WARNING ** End of DESC field could overlap beginning of CLMS **.

Claims

** WARNING ** Beginning of CLMS field could overlap end of DESC **.

Process for the production of a condensation product.

The subject of the present patent is a process for the production of a condensation product of the probable formula EMI1.1 characterized in that the N-3-trifluoromethyl-4-chloro-6-sulfophenyl produced for example from 2-chloro-1, 1'-diphenyl ether and 3-trifluoromethyl-4-chloro-6-sulfo-aniline N'-4-phenoxy-5-chlorophenyl urea is chlorinated and the chlorination product is converted into the sodium salt with a sodium compound.

Chlorine gas (with or without a catalyst), chlorinated lime, hypochlorous acid, etc. can be used as chlorinating agents.

By chlorination, e.g. B. with chlorine in glacial acetic acid, an atom of chlorine is introduced into the molecule, which is likely to form the compound of the above formula. This forms a light, crystalline powder that is clearly soluble in hot water, which can be used as a moth repellent.

Example: 100 parts of the N-3-trifluoromethyl-4-chloro-6-sulfo-phenyl-N'-4-phenoxy-5-chloro-phenylurea are dissolved in 600 parts of glacial acetic acid and saturated with chlorine gas at about 10 hours.

Most of the glacial acetic acid is distilled off and the residue is made slightly alkaline with about 25% sodium hydroxide solution, the compound precipitating as an oily product. The supernatant solution is decanted off and the oil is dissolved in 8000 parts of 95 water and filtered with a little charcoal. The compound is obtained in satisfactory purity by adding saturated saline solution and leaving it to stand overnight. This forms a pale crystalline powder that is clearly soluble in hot water.

PATENT CLAIM: Process for the preparation of a condensation product of the probable formula EMI1.2 characterized in that N-3-trifluoromethyl-4-chloro-6-sulfo-phenyl-N'-4-phenoxy-5-chloro-phenyl-urea is chlorinated and the chlorination product is converted into the sodium salt with a sodium compound.

The new condensation product forms a pale crystalline powder that is clearly soluble in hot water and can be used as a moth repellent.