CH304942A - Process for the production of a condensation product. - Google Patents

Process for the production of a condensation product.

Info

Publication number
CH304942A
CH304942A CH304942DA CH304942A CH 304942 A CH304942 A CH 304942A CH 304942D A CH304942D A CH 304942DA CH 304942 A CH304942 A CH 304942A
Authority
CH
Switzerland
Prior art keywords
chloro
trifluoromethyl
react
methyl
allowed
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 CH304942A publication Critical patent/CH304942A/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

Description

  

  



  Verfahren   zur¯Herstellung    eines Kondensationsproduktes.



   Gegenstand des vorliegenden Patentes ist ein Verfahren zur Herstellung eines Konden  sationsproduktes    der Formel
EMI1.1     
 dadurch gekennzeichnet, dass man 4-Chlor-5  trifluormet. hyl-anilin    mit einem Halogenkohlensäurederivat reagieren lässt und das erhaltene reaktive Carbaminsäurederivat mit 2   amino-8'-methyl-4, 4'-diehlor-diphenyläther-    6'-sulfonsaurem Natrium umsetzt.



   Eine Ausführungsform des erfindungsgemassen Verfahrens besteht darin, dass man 4  Chlor-5-trifluormethyl-anilin    mit Phosgen re  agieren    lässt und das erhaltene 4-Chlor-5-tri  fluormethyl-phenyl-ea. rbaminsäureehlorid    mit 2-amino-3'-methyl-4,   4'-dichlor-1.,    1'-diphenyl äther-6'-sulfonsaurem Natrium umsetzt. Dabei arbeitet man vorzugsweise in Gegenwart einer tertiären Base   a. Is    Kondensationsmittel.   Pyri..    din oder Chinolin sind für diesen Zweck vor allem geeignet.



   Des weitern kann man 4-Chlor-5-trifluormethyl-anilin mit Phosgen bei erhöhter Tem  peratur    umsetzen und das erhaltene 4-Chlor-5trifluormethyl-phenyl-isocyanat mit 2-amino  3'-methyl-4,    4'-dichlor-1, 1'-diphenylÏther-6'-sulfonsaurem Natrium zur Reaktion bringen, wobei man die Verbindung der obigen Formel in guter Ausbeute und vorzüglicher Reinheit erhÏlt. Als Lösungsmittel eignet sich für diese Art der Umsetzung vor allem Acetonitril.



   Schliesslich besteht eine Ausführungsform darin, dass man   4-Chlor-5-trifluormethyl-ani-    lin   mit einem Halogenkohlensäureester    reagieren lässt und d'en erhaltenen   4-Chlor-5-trifluor-    methyl-phenyl-earbaminsäureester mit 2-amino3'-methyl-4, 4'-dichlor-1,   1'-diphenyläther-6'-sul-    fonsaurem Natrium umsetzt.



   Als Halogenkohlensäureester kommen hauptsäehlieh niedere Alkyl-oder Arylester in    Frage. Der Umsatz kann vorteilha. ft in Wa. s-    ser vorgenommen werden.



   Das neue Kondensationsprodukt bildet ein helles, in heissem Wasser klar losliches Kri  stallpulver,    das als   Mottenschutzmittel    verwendet werden ka. nn.



      Beispiel 1 :    a) 300 Teile trockenes Benzol werden bei   70     mit Phosgen gesättigt ; dazu wird unter  Rühren und Einleiten von Phosgen eine L¯sung von 100 Teilen   4-Chlor-5-trifluormethyl-    anilin in 300 Teilen trockenem Benzol bei 65-70  zugetropft. Nach einiger Zeit erhitzt man bis zum Rückfluss und leitet so lange Phosgen ein, bis nur noch kleine Mengen des verwendeten   Amins ungelöst sind. Die    benzolische Lösung wird hierauf filtriert, das Benzol abdestilliert und das   4-Chlor-5-trifluorme-    thyl-phenyl-isocyanat fraktioniert. Kp14: 92¯; Ausbeute : 81%.

      b)    12, 33 Teile 2-amino-3'-methyl-4,-dichlor-1, 1'-diphenylÏther-6'-sulfonsaures Natrium werden in 60 Teilen Acetonitril gelöst, mit 7, 38 Teilen   4-Chlor-5-t. rifluormethil-phe-      nyl-isoeyanat    versetzt und vier Stunden auf dem Wasserbad erwärmt. Die Reaktionslösung wird filtriert und das Losungsmittel verdampft. Ausbeute : 17 Teile.



   Das Kondensationsprodukt wird in 1500 Teilen Wasser von   80-85     gelöst, mit wenig Tierkohle versetzt und heiss filtriert. Nach Zugabe von 60 Teilen   gesättigter Kochsalz-    lösung scheidet sieh das Kondensationspro  dukt.    aus.



   Nach dem Erkalten wird es gesammelt und im vakuum getrocknet. Um es von Koehsalz zu befreien, kann es aus absolutem Alkohol ausgezogen werden. Das neue   Kondensations-    produkt bildet nach dem Trocknen und Mahlen ein helles, in heissem Wasser klar lösliches Pulver.



   Beispiel 2 :
Das aus Phosgen und 4-Chlor-5-trifluormethylanilin in einem   troekenen    inerten Losungsmittel hergestellte 4-Chlor-5-trifluormethyl-phenyl-carbaminsÏurechlorid ergibt unter Zusatz von Pyridin als Kondensationsmittel mit 2-ammo-3'-metlyl-4,4'-dichlor-1,1'-diphenylÏther-6'-sulfonsaurem Natrium den in Beispiel   I    b ) beschriebenen Harnstoff in befrie  digender Ausbeute.   



   Beispiel 3 :
Der aus ChlorkohensÏurephenylester und 4-Chlor-5-trifluormethyl-anilin in trockenem Pyridin hergestellte   4-Chlor-5-t. rii'luormethyl-    phenyl-carbaminsÏurephenylester liefert durch Umsetzung mit 2-amino-3'-methyl-4,4'-dichlor1.1'-diphenylÏther-6'-sulfonsaurem Natrium in heissem Wasser den in   Beispiel l b) besehrie-    benen Harnstoff ; anstatt des 4-Chlor-5-tri  fluormet.    1-carbaminsÏurephenylesters kann   a-loch    der entsprechende Methylester verwendet werden.



  



  Process for the production of a condensation product.



   The present patent relates to a process for the preparation of a condensation product of the formula
EMI1.1
 characterized in that 4-chloro-5 trifluoromet. hyl-aniline can react with a halogenated carbonic acid derivative and the reactive carbamic acid derivative obtained is reacted with 2 amino-8'-methyl-4,4'-diehlor-diphenylether-6'-sulfonic acid sodium.



   One embodiment of the process according to the invention consists in allowing 4-chloro-5-trifluoromethyl-aniline to react with phosgene and the 4-chloro-5-trifluoromethyl-phenyl-ea. rbamic acid chloride with 2-amino-3'-methyl-4, 4'-dichloro-1, 1'-diphenyl ether-6'-sulfonic acid sodium. It is preferably carried out in the presence of a tertiary base a. Is condensing agent. Pyridine or quinoline are particularly suitable for this purpose.



   Furthermore, 4-chloro-5-trifluoromethyl-aniline can be reacted with phosgene at an elevated temperature and the 4-chloro-5-trifluoromethyl-phenyl isocyanate obtained with 2-amino 3'-methyl-4, 4'-dichloro-1, Bring 1'-diphenylÏther-6'-sulfonic acid sodium to the reaction, giving the compound of the above formula in good yield and excellent purity. A particularly suitable solvent for this type of reaction is acetonitrile.



   Finally, one embodiment consists in allowing 4-chloro-5-trifluoromethyl-aniline to react with a halocarbonic acid ester, and the 4-chloro-5-trifluoromethyl-phenyl-earbamic acid ester obtained with 2-amino3'-methyl- 4, 4'-dichloro-1, 1'-diphenylether-6'-sulphonic acid sodium converts.



   Lower alkyl or aryl esters are mainly suitable as halocarbonic acid esters. Sales can be advantageous. ft in wa. s-water.



   The new condensation product forms a light-colored crystal powder that dissolves clearly in hot water and can be used as a moth repellent. nn.



      Example 1: a) 300 parts of dry benzene are saturated with phosgene at 70; To this end, a solution of 100 parts of 4-chloro-5-trifluoromethylaniline in 300 parts of dry benzene at 65-70 is added dropwise with stirring and introduction of phosgene. After some time, the mixture is heated to reflux and phosgene is passed in until only small amounts of the amine used are undissolved. The benzene solution is then filtered, the benzene is distilled off and the 4-chloro-5-trifluoromethylphenyl isocyanate is fractionated. Bp14: 92¯; Yield: 81%.

      b) 12, 33 parts of 2-amino-3'-methyl-4, -dichlor-1, 1'-diphenylÏther-6'-sulfonic acid sodium are dissolved in 60 parts of acetonitrile, with 7, 38 parts of 4-chloro-5- t. rifluoromethil-phenyl-isoeyanate and warmed for four hours on the water bath. The reaction solution is filtered and the solvent is evaporated. Yield: 17 parts.



   The condensation product is dissolved in 1500 parts of 80-85 water, mixed with a little animal charcoal and filtered hot. After adding 60 parts of saturated sodium chloride solution, the condensation product separates. out.



   After cooling, it is collected and vacuum dried. In order to rid it of Koehsalz, it can be extracted from absolute alcohol. After drying and grinding, the new condensation product forms a pale powder that is clearly soluble in hot water.



   Example 2:
The 4-chloro-5-trifluoromethyl-phenyl-carbamic acid chloride prepared from phosgene and 4-chloro-5-trifluoromethylaniline in a dry, inert solvent gives with the addition of pyridine as a condensing agent with 2-ammo-3'-methyl-4,4'- dichloro-1,1'-diphenylÏther-6'-sulfonic acid sodium the urea described in Example I b) in satisfactory yield.



   Example 3:
The 4-chloro-5-t produced from chlorohensic acid phenyl ester and 4-chloro-5-trifluoromethyl aniline in dry pyridine. rii'luoromethyl-phenyl-carbaminsÏurephenylester provides by reaction with 2-amino-3'-methyl-4,4'-dichlor1.1'-diphenylÏther-6'-sulfonic acid sodium in hot water the urea described in Example l b); instead of the 4-chloro-5-tri fluoromet. 1-carbaminsÏurephenylesters can be used a-hole the corresponding methyl ester.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung- eines Konden sationsproduktes der Forme] EMI2.1 dadurch gekennzeichnet, da¯ man 4-Chlor-5trifluiormethyl-anilin mit einem Halogenkohlensäurederivat reagieren lässt und das erhaltene reaktive CarbaminsÏurederivat mit 2- amino-3'-methyl-4, 4'-dichlor-1, 1'-diphenyl äther- 6'-sulfonsaurem Natrium umsetzt. PATENT CLAIM: Process for the production of a condensation product of the form] EMI2.1 characterized in that 4-chloro-5trifluoromethyl-aniline is allowed to react with a halogenated carbonic acid derivative and the reactive carbamic acid derivative obtained is reacted with 2- amino-3'-methyl-4, 4'-dichloro-1, 1'-diphenyl ether- 6 ' -sulphonic acid sodium converts. Das neue Kondensationsprodukt bildet ein schönes, helles, in heissem Wasser klar l¯sliches Kristallpulver, das als Mottenschutz- mittel verwendet werden kann. The new condensation product forms a beautiful, light-colored crystal powder that is clearly soluble in hot water, which can be used as a moth repellent. UNTERANSPRFC'HE: 1. Verfahren gemäss Patentansprueh, da durch gekennzeiehnet, dass man 4-Chlor-5-tri- fluormethyl-anilin mit Phosgen reagieren lässt und das erhaltene 4-Chlor-5-trifluormethyI- phenyl-carbaminsäureehlorid mit 2-amino-3'methyl -4,4'- dichlor-1 ,1'- diphenylÏther - 6'- sulfonsaurem Natrium umsetzt. SUBSTANTIAL CLAIMS: 1. Process according to patent claim, as characterized by the fact that 4-chloro-5-trifluoromethyl-aniline is allowed to react with phosgene and the 4-chloro-5-trifluoromethyl-phenyl-carbamic acid chloride is reacted with 2-amino- 3'methyl -4,4'-dichloro-1, 1'-diphenylÏther - 6'-sulfonic acid sodium converts. 2. Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass man 4-Chlor-5-tri fluormethyl-anilin mit Phosgen bei erhöhter Temperatur reagieren lässt und das erhaltene 4-Chlor-5-trifluormethyl-phenyl-isocyanat mit 2-amino-3'-methyl-4, 4'-dichlor-1, 1'-diphenyl- ather-6'-sulfonsaurem Natrium umsetzt. 2. The method according to claim, characterized in that 4-chloro-5-trifluoromethyl-aniline is allowed to react with phosgene at elevated temperature and the 4-chloro-5-trifluoromethyl-phenyl-isocyanate obtained with 2-amino-3'- methyl-4, 4'-dichloro-1, 1'-diphenyl ether-6'-sulfonic acid sodium. 3. Verfahren gemäss Patentanspruch, da dureh gekennzeichnet, dass man 4-Chlor-5-trifluormethyl-anilin mit einem Halogenkohlen- säureester reagieren lässt und den erhaltenen 4-Chlor-5-trifluormethyl-phenyl-carbamin- säureester mit 2-amino-3'-methyl-4, 4'-dichlor- 1, 1'-diphenylather-6'-sulfonsaurem Natrinm umsetzt. 3. The method according to claim, characterized in that 4-chloro-5-trifluoromethyl-aniline is allowed to react with a halocarbon acid ester and the 4-chloro-5-trifluoromethyl-phenyl-carbamic acid ester obtained is allowed to react with 2-amino-3 '-methyl-4, 4'-dichloro-1, 1'-diphenylether-6'-sulfonic acid sodium converts.
CH304942D 1950-04-29 1950-04-29 Process for the production of a condensation product. CH304942A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH304942T 1950-04-29
CH300283T 1950-12-26

Publications (1)

Publication Number Publication Date
CH304942A true CH304942A (en) 1955-01-31

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CH304942D CH304942A (en) 1950-04-29 1950-04-29 Process for the production of a condensation product.

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CH (1) CH304942A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0765305A1 (en) * 1994-06-02 1997-04-02 Smithkline Beecham Corporation Anti-inflammatory compounds

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0765305A1 (en) * 1994-06-02 1997-04-02 Smithkline Beecham Corporation Anti-inflammatory compounds
EP0765305A4 (en) * 1994-06-02 1997-09-03 Smithkline Beecham Corp Anti-inflammatory compounds

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