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
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
- C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C309/41—Sulfonic 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
- C07C309/42—Sulfonic 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
Landscapes
- 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)
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) |
-
1950
- 1950-04-29 CH CH304982D patent/CH304982A/en unknown
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